Document:

EXHIBIT 10.44

                                                              EXECUTION ORIGINAL

  NINTH AMENDMENT TO REVOLVING CREDIT, TERM LOAN, EQUIPMENT LINE OF CREDIT AND
                               SECURITY AGREEMENT

      THIS NINTH AMENDMENT TO REVOLVING CREDIT, TERM LOAN, EQUIPMENT LINE OF
CREDIT AND SECURITY AGREEMENT (this "Agreement") is entered into October 9, 2009
by and among AIR INDUSTRIES MACHINING, CORP. (as successor by merger with Gales
Industries Acquisition Corp., Inc.), a corporation organized under the laws of
the State of New York ("Air"), SIGMA METALS, INC. (as successor by merger with
GMS Sub, Corp.), a corporation organized under the laws of the State of New York
("Sigma" and collectively with Air, the "Borrower"), WELDING METALLURGY, INC.
(as successor by merger with WMS MERGER CORP.), a corporation organized under
the laws of the State of New York ("WM"), AIR INDUSTRIES GROUP, INC. (f/k/a
Gales Industries Incorporated), a corporation organized under the laws of the
State of Delaware ("Air Group" and collectively with the Borrower and WM, the
"Obligor"), the financial institutions which are now or which hereafter become a
party hereto (collectively, the "Lenders" and individually a "Lender") and PNC
BANK, NATIONAL ASSOCIATION ("PNC"), as agent for Lenders (PNC, in such capacity,
the "Agent").

                                    RECITALS

      Whereas, Borrower and PNC entered into a certain Revolving Credit, Term
Loan, Equipment Line of Credit and Security Agreement dated November 30, 2005
(which has been, is being and may be further amended, replaced, restated,
modified and/or extended, the "Loan Agreement"); and

      Now, therefore, in consideration of PNC's continued extension of credit
and the agreements contained herein, the parties agree as follows:

                                    AGREEMENT

1)    ACKNOWLEDGMENT OF BALANCE. Borrower acknowledges that the most recent
      statement of account sent to Borrower with respect to the Obligations is
      correct.

2)    MODIFICATIONS. The Loan Agreement be and hereby is modified as follows:

      (a)   The following definitions in Section 1.2 of the Loan Agreement are
            hereby deleted, and are replaced to read as follows:

      "Advances" shall mean and include the Revolving Advances and as well as
      Letters of Credit.

      "Contract Rate" shall mean, as applicable, the Revolving Interest Rate, as
      more fully described in Section 3.1 herein.

      "Earnings Before Interest and Taxes" shall mean for any period the sum of
      (i) net income (or loss) of Air Group for such period (excluding
      extraordinary gains and losses) on a consolidated basis, plus (ii) all
      interest expense of Air Group for such period on a consolidated basis,
      plus (iii) all charges against income of Air Group for such period for
      federal, state and local taxes actually paid on a consolidated basis.

      "EBITDA" shall mean for any period with regard to Air Group the sum of (i)
      Earnings Before Interest and Taxes for such period on a consolidated basis
      plus (ii) depreciation expenses for such period on a consolidated basis,
      plus (iii) amortization expenses for such period on a consolidated basis.

      "Fixed Charge Coverage Ratio" shall mean and include, with respect to Air
      Group for any fiscal period, the ratio of (a) EBITDA on a consolidated
      basis, minus the aggregate amount of unfunded capitalized expenditures
      made during such period on a consolidated basis, minus the aggregate
      amount of distributions made during such period on a consolidated basis,
      minus the aggregate amount of cash taxes paid during such period on a
      consolidated basis to (b) the aggregate amount of principal and/or
      interest payments made on Funded Debt during such period on a consolidated
      basis.

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      "Loans" shall mean the Revolving Advances.

      "Maximum Loan Amount" shall mean $14,000,000.

      "Note" shall mean the Revolving Credit Note.

      "Revolving Advances" shall mean the Advances made other than Letters of
      Credit.

      "Revolving Interest Rate" shall mean an interest rate per annum equal to
      (a) the sum of the Alternate Base Rate plus two and one quarter of one
      percent (2.25%) with respect to Domestic Rate Loans and (b) the greater of
      (i) the sum of the Eurodollar Rate plus three and one half of one percent
      (3.50%) and (ii) five and one half of one percent (5.50%) with respect to
      Eurodollar Rate Loans.

      "Undrawn Availability" at a particular date shall mean an amount equal to
      (a) the lesser of (i) the Formula Amount or (ii) the Maximum Revolving
      Advance Amount, minus (b) the sum of (i) the outstanding amount of
      Advances plus (ii) all amounts due and owing to Borrower's trade creditors
      which are outstanding beyond normal trade terms, plus (iii) fees and
      expenses for which Borrower is liable but which have not been paid or
      charged to Borrower's Account.

      (b)   The following definition is hereby added to Section 1.2 of the Loan
            Agreement to read as follows:

      "Ninth Amendment Closing Date" shall mean October 9, 2009.

      (c)   The following definitions are hereby deleted in their entirety from
            Section 1.2 of the Loan Agreement:

      "Converted Equipment Loan(s)"

      "Converted Equipment Line of Credit Note"

      "Equipment Line of Credit Note"

      "Equipment Line of Credit Rate"

      "Equipment Loans"

      "Equipment Note"

      "Maximum Equipment Loan Amount"

      "Term Loan"

      "Term Loan Rate"

      "Term Note"

      (d)   Subsection 2.1(a) of the Loan Agreement is deleted, and is replaced
            by a new Subsection 2.1(a) to read as follows:

            2.1 Revolving Advances. (a) Subject to the terms and conditions set
      forth in this Agreement including Section 2.1(b), each Lender, severally
      and not jointly, will make Revolving Advances to Borrower in aggregate
      amounts outstanding at any time equal to such Lender's Commitment
      Percentage of the lesser of (x) the Maximum Revolving Advance Amount or
      (y) an amount equal to the sum of:

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                        (i) up to the sum of (A) 85%, subject to the provisions
                  of Section 2.1(b) hereof (the "Receivables Advance Rate A"),
                  of Eligible Receivables that do not constitute Eligible
                  Unassigned Government Receivables (specifically excluding all
                  Eligible Receivables of Sigma) plus (B) the lesser of (I) 50%,
                  subject to the provisions of Section 2.1(b) hereof (the
                  "Receivables Advance Rate B" and collectively with the
                  Receivables Advance Rate A, the "Receivables Advance Rate"),
                  of Eligible Unassigned Government Receivables (specifically
                  excluding all Eligible Unassigned Government Receivables of
                  Sigma) and (II) the Unassigned Government Receivables
                  Sublimit, plus

                        (ii) up to the lesser of (A) 50%, subject to the
                  provisions of Section 2.1(b) hereof, of the value of the
                  Eligible Inventory (specifically excluding all Eligible
                  Inventory of Sigma), (B) 85% of the appraised net orderly
                  liquidation value of Eligible Inventory (as evidenced by an
                  Inventory appraisal satisfactory to Agent in its sole
                  discretion exercised in good faith and specifically excluding
                  all Eligible Inventory of Sigma) or (C) the Inventory Sublimit
                  in the aggregate at any one time ("Inventory Advance Rate" and
                  together with the Receivables Advance Rate, collectively, the
                  "Advance Rates"), minus

                        (iii) such reserves as Agent may reasonably deem proper
                  and necessary from time to time including, but not limited to,
                  the Seller Note Payable Reserve.

      The amount derived from the sum of (x) Sections 2.1(a)(y)(i) and (ii)
      minus (y) Section 2.1 (a)(y)(iii) at any time and from time to time shall
      be referred to as the "Formula Amount". The Revolving Advances shall be
      evidenced by one or more secured promissory notes (collectively, the
      "Revolving Credit Note") substantially in the form attached hereto as
      Exhibit 2.1(a).

      (e)   Section 2.4 of the Loan Agreement is deleted, and is replaced by a
            new Section 2.4 to read as follows:

            2.4   INTENTIONALLY DELETED.

      (f)   Subsection 2.6(a) of the Loan Agreement is deleted, and is replaced
            by a new Subsection 2.6(a) to read as follows:

                  (a) The Revolving Advances shall be due and payable in full on
      the Termination Date subject to earlier prepayment as herein provided.

      (g)   Subsections 2.10(a) and (b) of the Loan Agreement are deleted, and
            are replaced by new Subsections 2.10(a) and (b) to read as follows:

                  (a) Each borrowing of Revolving Advances shall be advanced
      according to the applicable Commitment Percentages of Lenders.

                  (b) Each payment (including each prepayment) by Borrower on
      account of the principal of and interest on the Revolving Advances, shall
      be applied to the Revolving Advances pro rata according to the applicable
      Commitment Percentages of Lenders. Except as expressly provided herein,
      all payments (including prepayments) to be made by Borrower on account of
      principal, interest and fees shall be made without set off or counterclaim
      and shall be made to Agent on behalf of the Lenders to the Payment Office,
      in each case on or prior to 1:00 P.M., New York time, in Dollars and in
      immediately available funds.

      (h)   Section 2.11 of the Loan Agreement is deleted, and is replaced by a
            new Section 2.11 to read as follows:

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            2.11 Mandatory Prepayments. Subject to Section 4.3 hereof, when
      Borrower sells or otherwise disposes of any Collateral other than
      Inventory in the Ordinary Course of Business, Borrower shall repay the
      Advances in an amount equal to the net proceeds of such sale (i.e., gross
      proceeds less the reasonable costs of such sales or other dispositions),
      such repayments to be made promptly but in no event more than one (1)
      Business Day following receipt of such net proceeds, and until the date of
      payment, such proceeds shall be held in trust for Agent. The foregoing
      shall not be deemed to be implied consent to any such sale otherwise
      prohibited by the terms and conditions hereof. Such repayments shall be
      applied to the Advances in such order as Agent may determine, subject to
      Borrower's ability to reborrow Revolving Advances in accordance with the
      terms hereof.

      (i)   Section 3.1 of the Loan Agreement is deleted, and is replaced by a
            new Section 3.1 to read as follows:

            3.1 Interest. Interest on Advances shall be payable in arrears on
      the first day of each month with respect to Domestic Rate Loans and, with
      respect to Eurodollar Rate Loans, at the end of each Interest Period or,
      for Eurodollar Rate Loans with an Interest Period in excess of three
      months, at the earlier of (a) each three months from the commencement of
      such Eurodollar Rate Loan or (b) the end of the Interest Period. Interest
      charges shall be computed on the actual principal amount of Advances
      outstanding during the month at a rate per annum equal to with respect to
      Revolving Advances, the applicable Revolving Interest Rate (as applicable,
      the "Contract Rate"). Whenever, subsequent to the date of this Agreement,
      the Alternate Base Rate is increased or decreased, the applicable Contract
      Rate for Domestic Rate Loans shall be similarly changed without notice or
      demand of any kind by an amount equal to the amount of such change in the
      Alternate Base Rate during the time such change or changes remain in
      effect. The Eurodollar Rate shall be adjusted with respect to Eurodollar
      Rate Loans without notice or demand of any kind on the effective date of
      any change in the Reserve Percentage as of such effective date. Upon and
      after the occurrence of an Event of Default, and during the continuation
      thereof, (i) at the option of Agent or at the direction of Required
      Lenders, the Obligations other than Eurodollar Rate Loans shall bear
      interest at the applicable Contract Rate for Domestic Loans plus two
      percent (2%) per annum and (ii) Eurodollar Rate Loans shall bear interest
      at the Revolving Interest Rate for Eurodollar Rate Loans plus two percent
      (2%) per annum (as applicable, the "Default Rate").

      (j)   Subsection 3.3(b) of the Loan Agreement is deleted, and is replaced
            by a new Subsection 3.3(b) to read as follows:

                  (b) Collateral Monitoring Fee. Borrower shall pay to Agent on
      the first day of each month following any month in which Agent performs
      any collateral monitoring - namely any field examination, collateral
      analysis or other business analysis, the need for which is to be
      determined by Agent and which monitoring is undertaken by Agent or for
      Agent's benefit - a collateral monitoring fee in an amount equal to
      $850.00 per day for each person employed to perform such monitoring, plus
      all costs and disbursements incurred by Agent in the performance of such
      examination or analysis.

      (k)   Section 6.5 of the Loan Agreement is deleted, and is replaced by a
            new Section 6.5 to read as follows:

            6.5   Financial Covenants.

                  (a) Funded Debt Ratio. Maintain at all times a ratio of Funded
      Debt (exclusive of Indebtedness subordinated to the Steel City
      Subordinated Credit Facility but inclusive of Indebtedness for borrowed
      money not subordinated to the Steel City Subordinated Credit Facility
      whether or not it has a maturity of more than one year from its date of
      creation) to EBITDA of Air Group on a consolidated basis not greater than
      (i) 8.50 to 1.00 on September 30, 2009 tested on a rolling three month
      basis, (ii) 6.25 to 1.00 on October 31, 2009 tested on a rolling four
      month basis, (iii) 4.80 to 1.00 on November 30, 2009 tested on a rolling
      five month basis, (iv) 3.80 to 1.00 on December 31, 2009 tested on a
      rolling six month basis and (v) an amount equal to eighty five percent
      (85%) of the projected amounts provided by the Obligor to the Agent
      pursuant to Section 9.12 herein for each month thereafter, tested on a
      rolling seven month basis on January 31, 2010 and building each month
      thereafter to a rolling twelve (12) month basis.

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                  (b) Fixed Charge Coverage Ratio. Maintain at all times a Fixed
      Charge Coverage Ratio of not less than 1.25 to 1.00, tested monthly on a
      consolidated basis for the three months ending September 30, 2009 and at
      the end of each month thereafter building to a rolling twelve (12) month
      basis. For purposes of calculating the Fixed Charge Coverage Ratio, the
      repayment of the Term Loan, the Equipment Loans and the Converted
      Equipment Loans pursuant to the reduction of the 2008 Reserve on the Ninth
      Amendment Closing Date shall be excluded.

      (l)   Section 7.5 of the Loan Agreement is deleted, and is replaced by a
            new Section 7.5 to read as follows:

            7.5 Loans. Make advances, loans or extensions of credit to any
      Person, including any Parent, Subsidiary or Affiliate except with respect
      to (a) the extension of commercial trade credit in connection with the
      sale of Inventory in the Ordinary Course of Business, (b) loans made by
      Air to Air Group in an aggregate amount not to exceed $59,000 in any month
      so long as (i) such monies are utilized by Air Group to pay outstanding
      obligations of interest due and payable pursuant to the Junior
      Subordinated Notes and the New Junior Subordinated Notes (as such terms
      are defined in the Eighth Amendment to Revolving Credit, Term Loan,
      Equipment Line of Credit and Security Agreement dated September 25, 2008)
      and (ii) no Default and/or Event of Default has occurred and is continuing
      at the time of each such loan and/or shall be caused by making any such
      loan, and (c) loans to its employees in the Ordinary Course of Business
      not to exceed the aggregate amount of $200,000 at any time outstanding.

      (m)   Sections 9.7, 9.8 and 9.9 of the Loan Agreement are deleted, and are
            replaced by new Sections 9.7, 9.8 and 9.9 to read as follows:

            9.7 Annual Financial Statements. Furnish Agent within ninety (90)
      days after the end of each fiscal year of Air Group, audited financial
      statements of Air Group including, but not limited to, statements of
      income and stockholders' equity and cash flow from the beginning of the
      current fiscal year to the end of such fiscal year and the balance sheet
      as at the end of such fiscal year, all prepared on a consolidated and
      consolidating basis in accordance with GAAP applied on a basis consistent
      with prior practices, and in reasonable detail and reported upon without
      qualification by an independent certified public accounting firm selected
      by Air Group and satisfactory to Agent (the "Accountants"). The report of
      the Accountants shall be accompanied by a statement of the Accountants
      certifying that (i) they have caused this Agreement to be reviewed, (ii)
      in making the examination upon which such report was based either no
      information came to their attention which to their knowledge constituted
      an Event of Default or a Default under this Agreement or any related
      agreement or, if such information came to their attention, specifying any
      such Default or Event of Default, its nature, when it occurred and whether
      it is continuing, and such report shall contain or have appended thereto
      calculations which set forth Borrower's compliance with the requirements
      or restrictions imposed by Sections 6.5, 7.4, 7.5,7.6, 7.7, 7.8 and 7.11
      hereof. In addition, the reports shall be accompanied by a Compliance
      Certificate.

            9.8 Quarterly Financial Statements. Furnish Agent within 45 days
      after the end of each fiscal quarter, an unaudited balance sheet of Air
      Group and unaudited statements of income and stockholders' equity and cash
      flow of Air Group reflecting results of operations from the beginning of
      the fiscal year to the end of such quarter and for such quarter, prepared
      on a on a consolidated and consolidating basis consistent with prior
      practices and complete and correct in all material respects, subject to
      normal and recurring year end adjustments that individually and in the
      aggregate are not material to Borrower's business. The reports shall be
      accompanied by a Compliance Certificate.

            9.9 Monthly Financial Statements. Commencing with the month of July,
      2006, furnish Agent within thirty (30) days after the end of each month,
      an unaudited balance sheet of Air Group and unaudited statements of income
      and stockholders' equity and cash flow of Air Group reflecting results of
      operations from the beginning of the fiscal year to the end of such month
      and for such month, prepared on a on a consolidated and consolidating
      basis consistent with prior practices and complete and correct in all
      material respects, subject to normal and recurring year end adjustments
      that individually and in the aggregate are not material to Borrower's
      business. The reports shall be accompanied by a Compliance Certificate and
      a thirteen (13) week cash flow forecast of each Obligor.

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      (n)   Section 13.1 of the Loan Agreement is deleted, and is replaced by a
            new Section 13.1 to read as follows:

            13.1 Term This Agreement, which shall inure to the benefit of and
      shall be binding upon the respective successors and permitted assigns of
      Borrower, Agent and each Lender, shall become effective on the date hereof
      and shall continue in full force and effect until the Termination Date
      (the "Term") unless sooner terminated as herein provided. Borrower may
      terminate this Agreement at any time upon thirty (30) days' prior written
      notice upon payment in full of the Obligations. In the event the
      Obligations are prepaid in full prior to the last day of the Term (the
      date of such prepayment hereinafter referred to as the "Early Termination
      Date"), Borrower shall pay to Agent for the benefit of Lenders an early
      termination fee in an amount equal to (y) one percent (1%) of the Maximum
      Loan Amount if the Early Termination Date occurs on or after the Third
      Amendment Closing Date to and including the date immediately preceding the
      first anniversary of the Third Amendment Closing Date, and (z) one half of
      one percent (1/2%) of the Maximum Loan Amount if the Early Termination
      Date occurs on or after the first anniversary of the Third Amendment
      Closing Date to and including the date immediately preceding the second
      anniversary of the Third Amendment Closing Date.

3)    WAIVER OF PRIOR DEFAULTS. The Obligor acknowledges that it is in default
      of various covenants including, but not limited to, (i) failure to comply
      with Section 7.5 of the Loan Agreement for the extension of certain loans
      by Air in favor of Air Group and (ii) the occurrence of an event of
      default under the Subordinated Loan Documentation as set forth in Section
      10.19. The Lenders hereby waive the Obligor's default under such covenants
      as of the date hereof and the Default Rate is no longer in effect at this
      time. Except as heretofore waived by the Lenders in writing, the Lenders
      reserve their rights under the Loan Agreement and the Other Documents for
      defaults under such covenants for any other periods and to institute the
      Default Rate with regard to any other defaults. The Lenders hereby confirm
      that there are no existing Defaults and/or Events of Default due to the
      Obligor's failure to comply with any financial covenants set forth in
      Section 6 of the Loan Agreement.

4)    AVAILABILITY RESERVE. The Agent hereby reduces the amount of the 2008
      Reserve from $900,000 to $488,800. The excess availability created by this
      reduction of the 2008 Reserve shall be utilized to payoff in full the Term
      Loan, the Equipment Loans and the Converted Equipment Loans.

5)    EXTENSION OF DELIVERY DATE FOR 2008 AUDITED FINANCIAL STATEMENTS. The
      Lenders hereby agree that, notwithstanding the requirements of Section 9.7
      of the Loan Agreement, the annual audited financial statements of Air
      Group for the fiscal year ended December 31, 2008 only, prepared on a
      consolidated and consolidating basis, together with all other information
      and documents required to be delivered pursuant to Section 9.7 for such
      fiscal year only, shall be delivered to the Agent on or before October 23,
      2009 along with revised annual audited financial statements of Air Group
      for the fiscal year ended December 31, 2007. Nothing herein shall be
      deemed or construed as (i) a consent by the Lenders to extend the delivery
      date of any other financial statements or information required to be
      delivered by the Obligor pursuant to Section 9.7 of the Loan Agreement
      (other than with respect to the audited financial statements and other
      related information for the fiscal year ended December 31, 2008 only, as
      expressly set forth above) or (ii) a waiver of any of the other delivery
      requirements of the Obligor under Section 9.7 of the Loan Agreement.

6)    INVENTORY APPRAISAL. The Obligor and the Lenders hereby agree that the
      Agent shall order an appraisal of the Obligor's Inventory which shall be
      delivered to the Agent by not later than March 31, 2010.

7)    PAYMENTS MADE WITH REGARD TO SIGMA'S ACCOUNTS PAYABLE. The Obligor hereby
      agrees that any and all payments with regard to Sigma's accounts payable
      shall not exceed (i) $150,000 from the Ninth Amendment Closing Date
      through and including December 31, 2009 and (ii) $150,000 during any
      fiscal year thereafter. The Obligor hereby agrees to provide to the Agent
      on or before the 15th day of each month hereafter a monthly summary of all
      accounts payable of Sigma for the immediately preceding month, which lists
      all cash payments made to and all debt forgiven by any creditor.

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8)    CONSENT TO PRINCIPAL PAYMENTS WITH REGARD TO THE SUBORDINATED NOTE.
      Notwithstanding anything to the contrary in the Subordination Agreement,
      the Lenders hereby consent to the Obligor making monthly principal
      payments to the Steel City with regard to the Subordinated Note so long as
      (i) the aggregate amount of each such monthly payment does not exceed
      $20,000, (ii) Air Group's consolidated Fixed Charge Coverage Ratio prior
      to each such payment and immediately after each such payment is not less
      than 1.05 to 1.00 (tested on a rolling three month basis as of September
      1, 2009, a rolling four month basis as of October 1, 2009, a rolling five
      month basis as of November 1, 2009, a rolling six month basis as of
      December 1, 2009, a rolling seven month basis as of January 1, 2010, a
      rolling eight month basis as of February 1, 2010, a rolling nine month
      basis as of March 1, 2010, a rolling ten month basis as of April 1, 2010,
      a rolling eleven month basis as of May 1, 2010 and a rolling twelve month
      basis as of June 1, 2010 and for each month thereafter) and (iii) no
      Default and/or Event of Default has occurred and is continuing at the time
      of each such payment and/or shall be caused by making any such payment
      other than any Default and/or Event of Default due to the Fixed Charge
      Coverage Ratio being less than 1.25 to 1.00 for the applicable time
      period.

9)    CONSENT TO CONSIGNMENT AGREEMENT WITH TRANS WORLD ALLOYS. The Lenders
      hereby consent to Sigma entering into a consignment agreement with TW
      Alloys, a California corporation having a place of business at 334 East
      Gardena Boulevard, Gardena, California 90248 ("TW Alloys"), so long as (i)
      such consignment agreement is in form and substance acceptable to the
      Agent and (ii) TW Alloys enters into an access agreement in form and
      substance acceptable to the Agent.

10)   LATE FEE. If, at any time, the Obligor does not provide and deliver to the
      Agent and/or the Lenders any documents, information, financial statements,
      notices and/or any other materials required to by provided pursuant to the
      terms and conditions of the Loan Agreement and/or any Other Document, then
      the Obligor shall pay to the Agent for the benefit of the Lenders a late
      fee in the amount of $500 for each day that such materials are not
      provided and delivered to the Agent and/or the Lenders. Failure to comply
      with this Section 10 is an Event of Default under the Loan Agreement.

11)   GUARANTORS RATIFICATION. WM and Air Group each hereby reaffirm their
      respective continuing obligations under the terms of each respective
      Guaranty and Suretyship Agreement dated August 24, 2007 executed by each
      (collectively, the "Guaranty"), and acknowledges that (i) each has read
      this Agreement, (ii) the Obligations under the Loan Agreement are secured
      by their respective Guaranty, and (iii) each makes such reaffirmation with
      full knowledge of the terms thereof.

12)   ACKNOWLEDGMENTS. Borrower acknowledges and represents that:

      (A) the Loan Agreement and Other Documents, as amended hereby, are in full
      force and effect without any defense, claim, counterclaim, right or claim
      of set-off;

      (B) to the best of its knowledge, no default by the Agent or Lenders in
      the performance of their duties under the Loan Agreement or the Other
      Documents has occurred;

      (C) all representations and warranties of the Borrower contained herein,
      in the Loan Agreement and in the Other Documents are true and correct in
      all material respects as of this date, except for any representation or
      warranty that specifically refers to an earlier date;

      (D) Borrower has taken all necessary action to authorize the execution and
      delivery of this Agreement; and

      (E) this Agreement is a modification of an existing obligation and is not
      a novation.

13)   PRECONDITIONS. As a precondition to the effectiveness of any of the
      modifications, consents, or waivers contained herein, the Borrower agrees
      to:

      (A) provide the Agent with this Agreement, properly executed;

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      (B) pay to the Agent a modification fee in the amount of $25,000;

      (C) pay all legal fees incurred by the Agent in entering into this
      Agreement to Wilentz, Goldman & Spitzer; and

      (D) pay all other fees and costs incurred by the Lenders in entering into
      this Agreement.

14)   MISCELLANEOUS. This Agreement shall be construed in accordance with and
      governed by the laws of the State of New York, without reference to that
      state's conflicts of law principles. This Agreement, the Loan Agreement
      and the Other Documents constitute the sole agreement of the parties with
      respect to the subject matter thereof and supersede all oral negotiations
      and prior writings with respect to the subject matter thereof. No
      amendment of this Agreement, and no waiver of any one or more of the
      provisions hereof shall be effective unless set forth in writing and
      signed by the parties hereto. The illegality, unenforceability or
      inconsistency of any provision of this Agreement shall not in any way
      affect or impair the legality, enforceability or consistency of the
      remaining provisions of this Agreement, the Loan Agreement or the Other
      Documents. This Agreement, the Loan Agreement and the Other Documents are
      intended to be consistent. However, in the event of any inconsistencies
      among this Agreement, the Loan Agreement and/or any of the Other
      Documents, the terms of this Agreement, then the Loan Agreement, shall
      control. This Agreement may be executed in any number of counterparts and
      by the different parties on separate counterparts. Each such counterpart
      shall be deemed an original, but all such counterparts shall together
      constitute one and the same agreement.

15)   DEFINITIONS. The terms used herein and not otherwise defined or modified
      herein shall have the meanings ascribed to them in the Loan Agreement. The
      terms used herein and not otherwise defined or modified herein or defined
      in the Loan Agreement shall have the meanings ascribed to them by the
      Uniform Commercial Code as enacted in State of New York.

      IN WITNESS WHEREOF, the undersigned have signed and sealed this Agreement
the day and year first above written.

ATTEST:                               AIR INDUSTRIES MACHINING, CORP.

By:                                   By:
    -------------------------------       -------------------------------
Name:  DARIO PERAGALLO                Name:  PETER RETTALIATA
Title: Secretary                      Title: President

ATTEST:                               SIGMA METALS, INC.

By:                                   By:
    -------------------------------       -------------------------------
Name:  DARIO PERAGALLO                Name:  PETER RETTALIATA
Title: Secretary                      Title: President

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ATTEST:                               WELDING METALLURGY, INC.  (as successor by
                                      merger with WMS Merger Corp.)

By: /s/ Dario Peragallo               By: /s/ Peter Rettaliata
    -------------------------------       -------------------------------
Name:  DARIO PERAGALLO                Name:  PETER RETTALIATA
Title: Secretary                      Title: President

ATTEST:                               AIR INDUSTRIES GROUP, INC.
                                      (f/k/a Gales Industries Incorporated)

By: /s/ Dario Peragallo               By: /s/ Peter Rettaliata
    -------------------------------       -------------------------------
Name:  DARIO PERAGALLO                Name:  PETER RETTALIATA
Title: Secretary                      Title: President

                                      PNC BANK, NATIONAL ASSOCIATION
                                      Lender and as Agent

                                      By: /s/ A. Roger Craig, Jr.
                                          -------------------------------
                                      Name:  A. ROGER CRAIG, JR.
                                      Title: Vice President

                                       9EXHIBIT 10.45

                               WAIVER, CONSENT AND
                                 AMENDMENT NO. 4
                       TO TERM LOAN AND SECURITY AGREEMENT

      THIS WAIVER, CONSENT AND AMENDMENT NO. 4 ("Amendment") is entered into as
of September 24, 2009, by and among AIR INDUSTRIES MACHINING, CORP. ("Air"),
SIGMA METALS, INC. ("Sigma"), WELDING METALLURGY, INC. ("WMI", and together with
Air and Sigma, each a "Borrower" and collectively the "Borrowers"), AIR
INDUSTRIES GROUP, INC. ("Air Group") and STEEL CITY CAPITAL FUNDING, LLC
("SCC").

                                   BACKGROUND

      Borrowers and SCC are parties to a Term Loan and Security Agreement (as
amended, restated, supplemented or otherwise modified from time to time, the
"Loan Agreement") dated as of August 24, 2007, pursuant to which SCC provided
Borrower with certain financial accommodations.

      Borrowers (i) have violated Sections 6.5, 6.13 and 9.7 of the Loan
Agreement and seek a waiver of the Events of Default arising from such
violations as well as a waiver of the cross-default to the Senior Loan
Agreement, and (ii) seek consent to (a) the Consignment Agreement between Sigma
and TW Alloys and (b) Senior Lender reducing the Availability Block by the
amount of the outstanding term loan under the Senior Loan Agreement and
utilizing the resulting increased availability to repay in full such term loan,
and SCC is willing to do so on the terms and conditions hereafter set forth.

      NOW, THEREFORE, in consideration of any loan or advance or grant of credit
heretofore or hereafter made to or for the account of Borrowers by SCC and for
other good and valuable consideration, the receipt and sufficiency of which are
hereby acknowledged, the parties hereto hereby agree as follows:

      1. Definitions. All capitalized terms not otherwise defined herein shall
have the meanings given to them in the Loan Agreement.

      2. Amendments to Loan Agreement. Subject to satisfaction of the conditions
precedent set forth in Section 5 below, the Loan Agreement is hereby amended as
follows:

            (a) Section 1.2 of the Loan Agreement is hereby amended by adding
the following defined terms in their appropriate alphabetical order:

                  "Amendment No. 4" shall mean the Waiver, Consent and Amendment
                  No. 4 to Term Loan and Security Agreement dated as of
                  September __, 2009 by and among Borrowers and SCC.

                  "TW Alloys" shall mean TW Alloys with a place of business at
                  334 East Gardena Boulevard, Gardena, California 90248, a
                  California corporation.

            (b) Section 1.2 of the Loan Agreement is hereby amended by amending
the defined term "Term Loan Rate" in its entirety as follows:

<PAGE>

                  "Term Loan Rate" shall mean an interest rate per annum equal
                  to (a) the sum of (i) the greater of (1) the Alternate Base
                  Rate, or (2) 4.75%, (the "Prime Floor") plus (ii) six percent
                  (6.00%) with respect to Domestic Rate Loans, and (b) the sum
                  of (i) the greater of (1) the Eurodollar Rate, or (2) 2.25%
                  (the "LIBOR Floor"), plus (ii) eight and one-half of one
                  percent (8.50%) with respect to Eurodollar Rate Loans.

            (c) Section 2.1 of the Loan Agreement is hereby amended by adding
the following sentence at the end thereof:

                  "Effective on the first day of the month following the
                  effective date of Amendment No. 4, anything in this Agreement
                  or the Term Note to the contrary notwithstanding, Borrowers
                  shall make monthly payments of principal equal to $20,000 on
                  the first day of each month."

            (d) Section 6.5(a) of the Loan Agreement is hereby deleted and
Sections 6.5(b), (c) and (d) of the Loan Agreement are hereby amended in their
entirety to provide as follows:

                  "(b) Fixed Charge Coverage Ratio. Maintain at all times a
                  Fixed Charge Coverage Ratio of not less than 1.25 to 1.00,
                  tested monthly for the three months ending September 30, 2009
                  and at the end of each month thereafter building to a rolling
                  twelve (12) month basis. For purposes of calculating the Fixed
                  Charge Coverage Ratio, the repayment of the term loan under
                  the Senior Loan Agreement resulting from the reduction of the
                  Availability Block shall be excluded.

                  (c) Funded Debt Ratio. Maintain at all times a ratio of Funded
                  Debt (exclusive of Indebtedness subordinated to the Term Loan
                  but inclusive of Indebtedness for borrowed money not
                  subordinated to the Term Loan whether or not it has a maturity
                  of more than one year from its date of creation) to EBITDA not
                  greater than the ratio set forth below for the applicable time
                  period:

                  Time Period                                       Ratio
                  -----------                                       -----

                  Three months ending September 30, 2009            8.50 to 1.00
                  Four months ending October 31, 2009               6.25 to 1.00
                  Five months ending November 30, 2009              4.80 to 1.00
                  Six months ending December 31, 2009               3.80 to 1.00

                  The Funded Debt Ratio covenant for the seven months ending
                  January 31, 2010 and each month ending thereafter building to
                  a rolling twelve (12) month period will be based upon the
                  projections to be provided pursuant to Section 9.12 and
                  acceptable to SCC.

                                       2
<PAGE>

                  (d) Consolidated Basis. On and after the effective date of
                  Amendment No. 4, all financial covenants shall be determined
                  for Air Group and its Subsidiaries on a consolidated basis and
                  all financial statements and projections to be provided under
                  this Agreement shall be provided for Air Group and its
                  Subsidiaries on a consolidated and consolidating basis."

            (e) A new Section 7.24 is hereby added to the Loan Agreement which
provides as follows:

                  "7.24 Payments to Sigma Vendors. Given the fact operations of
                  Sigma have been discontinued since October 31, 2008, make cash
                  payments to vendors of Sigma in excess of $150,000 in the
                  aggregate during each of (i) the period September 1, 2009
                  through December 31, 2009, and (ii) each calendar year
                  commencing January 1, 2010."

            (f) Section 9.2(a) is hereby amended by amending clause (x) to add
the following language at the end thereof:

                  "together with a summary of accounts payable of Sigma which
                  shows cash payments and forgiveness of debt by vendors to
                  Sigma."

            (g) A new Section 9.17 is hereby added to the Loan Agreement which
provides as follows:

                  "9.17 Additional Information. Provide SCC (1) within fourteen
                  (14) days of the effective date of Amendment No. 4 with the
                  consolidated and consolidating audited and unqualified year
                  end financial statements for 2008 and the revised year end
                  financial statements for 2007, (2) during the first quarter of
                  2010, with an appraisal of inventory at Borrower's expense,
                  which appraisal shall be in form and substance, and by an
                  appraiser, acceptable to SCC, and (3) with 13 week cash flow
                  forecasts together with the monthly financial statements to be
                  delivered pursuant to Section 9.9."

      3. Consent. Subject to the satisfaction of the conditions precedent set
forth in Section 5 below, SCC hereby consents to (i) the Consignment Agreement
between Sigma and TW Alloys, and (ii) Senior Lender reducing the Availability
Block by the amount of the outstanding term loan under the Senior Loan Agreement
and utilizing the resulting availability to repay in full such term loan.

      4. Waiver. Subject to the satisfaction of the conditions precedent set
forth in Section 5 below, SCC hereby waives the (i) breach of Section 6.5(c) of
the Loan Agreement for the period commencing November 1, 2008 and ending August
31, 2009, (ii) breach of Section 6.5(d) of the Loan Agreement for the period
commencing September 1, 2008 and ending May 31, 2009, (iii) breach of Section
6.13 of the Loan Agreement due to the failure to have new financial covenants
implemented on a timely basis, (iv) breach of Section 9.7 of the Loan Agreement
due to the failure to deliver the 2008 year end audited financial statements of
Borrower, and (v) Event of Default under Section 10.13 of the Loan Agreement due
to the events of default which occurred under the Senior Loan Agreement.

                                       3
<PAGE>

      5. Conditions of Effectiveness. This Amendment shall become effective upon
receipt by SCC of (a) four (4) copies of this Amendment executed by Borrowers
and Guarantor, (b) an amendment fee of $50,000, (c) a copy of an amendment to
the Senior Loan Agreement which waives the existing defaults under the Senior
Loan Agreement, amends the Senior Loan Agreement in a manner consistent with
Section 2(d), (e), (f) and (g) of this Amendment and consents to the execution
and performance of this Amendment, (d) an executed copy of an amendment to the
Subordinated Loan Documentation pursuant to which the Subordinated Lender agrees
to defer any payments of the Subordinated Loan until the Obligations have been
paid in full, and (e) payment of legal fees and disbursements of SCC's counsel.

      6. Representations and Warranties. Each Borrower hereby represents and
warrants as follows:

            (a) This Amendment and the Loan Agreement, as amended hereby,
constitute legal, valid and binding obligations of Borrowers and are enforceable
against Borrowers in accordance with their respective terms.

            (b) Upon the effectiveness of this Amendment such Borrower hereby
reaffirms all covenants, representations and warranties made in the Loan
Agreement, and agrees that all such covenants, representations and warranties
shall be deemed to have been remade as of the effective date of this Amendment.

            (c) Borrowers have no defense, counterclaim or offset with respect
to the Loan Agreement.

      7. Effect on the Loan Agreement.

            (a) Upon the effectiveness of Section 2 hereof, each reference in
the Loan Agreement to "this Agreement," "hereunder," "hereof," "herein" or words
of like import shall mean and be a reference to the Loan Agreement as amended
hereby.

            (b) Except as specifically amended herein, the Loan Agreement, and
all other documents, instruments and agreements executed and/or delivered in
connection therewith, shall remain in full force and effect, and are hereby
ratified and confirmed.

            (c) Except as specifically provided herein, the execution, delivery
and effectiveness of this Amendment shall not operate as a waiver of any right,
power or remedy of SCC, nor constitute a waiver of any provision of the Loan
Agreement, or any other documents, instruments or agreements executed and/or
delivered under or in connection therewith.

            (d) Upon the effectiveness of this Amendment, SCC will not charge
interest at the Default Rate due to the occurrence of the Events of Default
which have been waived pursuant to Section 4 of this Amendment.

                                       4
<PAGE>

            (e) The Senior Lender shall amend the Senior Loan Agreement so that
the Receivables and Inventory of Sigma shall not create any availability under
the Senior Loan Agreement.

      8. Governing Law. This Amendment shall be binding upon and inure to the
benefit of the parties hereto and their respective successors and assigns and
shall be governed by and construed in accordance with the internal laws of the
State of New York.

      9. Headings. Section headings in this Amendment are included herein for
convenience of reference only and shall not constitute a part of this Amendment
for any other purpose.

      10. Counterparts; Facsimile. This Amendment may be executed by the parties
hereto in one or more counterparts, each of which shall be deemed an original
and all of which when taken together shall constitute one and the same
agreement. Any signature delivered by a party by facsimile or "pdf" transmission
shall be deemed to be an original signature hereto.

                            [signature page follows]

                                       5
<PAGE>

      IN WITNESS WHEREOF, this Amendment has been duly executed as of the day
and year first written above.

                                     AIR INDUSTRIES MACHINING, CORP.

                                     By: /s/ Peter Rettaliata
                                         ------------------------
                                     Name:  Peter Rettaliata
                                     Title: Chief Executive Officer & President

                                     SIGMA METALS, INC.

                                     By: /s/ Peter Rettaliata
                                         ------------------------
                                     Name:  Peter Rettaliata
                                     Title: Chief Executive Officer & President

                                     WELDING METALLURGY, INC.

                                     By: /s/ Peter Rettaliata
                                         ------------------------
                                     Name:  Peter Rettaliata
                                     Title: Chief Executive Officer & President

                                     STEEL CITY CAPITAL FUNDING, LLC,

                                     By: /s/ Ronald J. Comito
                                         ------------------------
                                     Name:  Ronald J. Comito
                                     Title: Senior Vice President

THE FOREGOING AMENDMENT IS HEREBY
ACKNOWLEDGED AND AGREED
BY THE FOLLOWING GUARANTOR:

AIR INDUSTRIES GROUP, INC.

By: /s/ Peter Rettaliata
    ------------------------
Name:  Peter Rettaliata
Title: Chief Executive Officer & President

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