<PAGE>   1

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                                 UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549

                                   FORM 10-Q

(MARK ONE)

<TABLE>
<S>  <C>
[X]  QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE
     SECURITIES EXCHANGE ACT OF 1934 FOR THE QUARTERLY PERIOD
     ENDED JUNE 30, 1999, OR
[ ]  TRANSITION REPORT PURSUANT TO SECTION 13 OR 15 (d) OF THE
     SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD
     FROM ____________ TO ____________
</TABLE>

                         COMMISSION FILE NO. 333-43005

                           PARK-OHIO INDUSTRIES, INC.
             (EXACT NAME OF REGISTRANT AS SPECIFIED IN ITS CHARTER)

<TABLE>
<S>                                        <C>
                   OHIO                                    34-6520107
------------------------------------------ ------------------------------------------
     (State or other jurisdiction of                    (I.R.S. Employer
      incorporation or organization)                  Identification No.)
   23000 EUCLID AVENUE, CLEVELAND, OHIO                      44117
------------------------------------------ ------------------------------------------
 (Address of principal executive offices)                  (Zip Code)
</TABLE>

        REGISTRANT'S TELEPHONE NUMBER, INCLUDING AREA CODE: 216/692-7200
   PURSUANT TO A CORPORATE REORGANIZATION EFFECTIVE JUNE 15, 1998, PARK-OHIO
 INDUSTRIES, INC. BECAME A WHOLLY-OWNED SUBSIDIARY OF PARK-OHIO HOLDINGS CORP.

                THE REGISTRANT MEETS THE CONDITIONS SET FORTH IN
            GENERAL INSTRUCTION H(1)(a) AND (b) OF FORM 10-Q AND IS
          THEREFORE FILING THIS FORM IN THE REDUCED DISCLOSURE FORMAT.

Indicate by check mark whether the registrant:

<TABLE>
      <S>  <C>
      (1)  Has filed all reports required to be filed by Section 13 or
           15(d) of the Securities Exchange Act of 1934 during the
           preceding twelve months (or for such shorter period that the
           registrant was required to file such reports):
      and
      (2)  Has been subject to such filing requirements for the past 90
           days.
           YES [X]     NO [ ]
</TABLE>

All of the outstanding capital stock of the registrant is held by Park-Ohio
Holdings Corp. As of July 31, 1999, 100 shares of the registrant's common stock,
$1 par value, was outstanding.

                    The Exhibit Index is located on page 18.

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<PAGE>   2

                  PARK-OHIO INDUSTRIES, INC. AND SUBSIDIARIES

                                     INDEX

<TABLE>
<S>         <C>
PART I.     FINANCIAL INFORMATION
Item 1.     Financial Statements (Unaudited)
            Consolidated balance sheets -- June 30, 1999 and December
            31, 1998
            Consolidated statements of income -- Six months and three
            months ended June 30, 1999 and 1998
            Consolidated statements of shareholder's equity -- Six
            months ended June 30, 1999
            Consolidated statements of cash flows -- Six months ended
            June 30, 1999 and 1998
            Notes to consolidated financial statements -- June 30, 1999
            Independent accountants' review report
            Management's Discussion and Analysis of Financial Condition
Item 2.     and Results of Operations

PART II.    OTHER INFORMATION
Item 6.     Exhibits and Reports on Form 8-K

SIGNATURE

EXHIBIT INDEX
</TABLE>

                                        2
<PAGE>   3

                                     PART I

                             FINANCIAL INFORMATION

                                        3
<PAGE>   4

                  PARK-OHIO INDUSTRIES, INC. AND SUBSIDIARIES

                          CONSOLIDATED BALANCE SHEETS

<TABLE>
<CAPTION>
                                                              (UNAUDITED)
                                                                JUNE 30      DECEMBER 31
                                                                 1999            1998
                                                              -----------    ------------
                                                                (DOLLARS IN THOUSANDS)
<S>                                                           <C>            <C>
                           ASSETS
Current Assets
  Cash and cash equivalents.................................   $  6,269        $  4,320
  Accounts receivable, less allowances for doubtful accounts
     of $3,080 at June 30, 1999 and $2,803 at December 31,
     1998...................................................    105,750          95,718
  Inventories...............................................    169,821         150,052
  Deferred tax assets.......................................      2,232           2,232
  Other current assets......................................      6,161           5,468
                                                               --------        --------
       Total Current Assets.................................    290,233         257,790
Property, Plant and Equipment...............................    203,092         160,625
  Less accumulated depreciation.............................     78,717          70,468
                                                               --------        --------
                                                                124,375          90,157
Other Assets
  Excess purchase price over net assets acquired, net of
     accumulated amortization of $10,627 at June 30, 1999
     and $8,105 at December 31, 1998........................    110,455          99,351
  Deferred taxes............................................      8,900           8,900
  Other.....................................................     47,737          33,356
                                                               --------        --------
                                                               $581,700        $489,554
                                                               ========        ========
            LIABILITIES AND SHAREHOLDER'S EQUITY
Current Liabilities
  Trade accounts payable....................................   $ 57,224        $ 46,755
  Accrued expenses..........................................     54,416          32,076
  Current portion of long-term liabilities..................      2,039           2,372
                                                               --------        --------
       Total Current Liabilities............................    113,679          81,203
Long-Term Liabilities, less current portion
  Long-term debt............................................    287,766         237,483
  Other postretirement benefits.............................     25,823          26,286
  Other.....................................................      4,167           3,740
                                                               --------        --------
                                                                317,756         267,509
Shareholder's Equity
  Common stock, par value $1 per share......................        -0-             -0-
  Additional paid-in capital................................     64,844          64,844
  Retained earnings.........................................     86,494          77,580
  Accumulated other comprehensive earnings (loss)...........     (1,073)         (1,582)
                                                               --------        --------
                                                                150,265         140,842
                                                               --------        --------
                                                               $581,700        $489,554
                                                               ========        ========
</TABLE>

Note: The balance sheet at December 31, 1998 has been derived from the audited
      financial statements at that date, but does not include all of the
      information and footnotes required by generally accepted accounting
      principles for complete financial statements.

See notes to consolidated financial statements.

                                        4
<PAGE>   5

                  PARK-OHIO INDUSTRIES, INC. AND SUBSIDIARIES

                 CONSOLIDATED STATEMENTS OF INCOME (UNAUDITED)

<TABLE>
<CAPTION>
                                                   THREE MONTHS ENDED       SIX MONTHS ENDED
                                                        JUNE 30                 JUNE 30
                                                  --------------------    --------------------
                                                    1999        1998        1999        1998
                                                  --------    --------    --------    --------
                                                             (DOLLARS IN THOUSANDS)
<S>                                               <C>         <C>         <C>         <C>
Net sales.......................................  $186,917    $140,765    $358,320    $277,268
Cost of products sold...........................   153,104     117,179     293,540     230,350
                                                  --------    --------    --------    --------
  Gross profit..................................    33,813      23,586      64,780      46,918
Selling, general and administrative expenses....    20,166      13,393      38,118      27,530
                                                  --------    --------    --------    --------
  Operating income..............................    13,647      10,193      26,662      19,388
Interest expense................................     5,693       4,341      11,071       8,493
                                                  --------    --------    --------    --------
  Income before income taxes....................     7,954       5,852      15,591      10,895
Income taxes....................................     3,389       2,516       6,677       4,685
                                                  --------    --------    --------    --------
  Net income....................................  $  4,565    $  3,336    $  8,914    $  6,210
                                                  ========    ========    ========    ========
</TABLE>

See notes to consolidated financial statements.

                                        5
<PAGE>   6

                  PARK-OHIO INDUSTRIES, INC. AND SUBSIDIARIES

           CONSOLIDATED STATEMENT OF SHAREHOLDER'S EQUITY (UNAUDITED)

<TABLE>
<CAPTION>
                                                                           ACCUMULATED
                                                                              OTHER
                                                ADDITIONAL                COMPREHENSIVE
                                      COMMON     PAID-IN      RETAINED      EARNINGS
                                      STOCK      CAPITAL      EARNINGS       (LOSS)         TOTAL
                                      ------    ----------    --------    -------------    --------
                                                         (DOLLARS IN THOUSANDS)
<S>                                   <C>       <C>           <C>         <C>              <C>
Balance January 1, 1999.............   $-0-      $64,844      $77,580        $(1,582)      $140,842
Comprehensive income:
  Net income........................                            8,914                         8,914
  Foreign currency translation
     adjustment.....................                                             509            509
                                                                                           --------
     Comprehensive income...........                                                          9,423
                                       ----      -------      -------        -------       --------
Balance June 30, 1999...............   $-0-      $64,844      $86,494        $(1,073)      $150,265
                                       ====      =======      =======        =======       ========
</TABLE>

See notes to consolidated financial statements.

                                        6
<PAGE>   7

                  PARK-OHIO INDUSTRIES, INC. AND SUBSIDIARIES

               CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED)

<TABLE>
<CAPTION>
                                                                 SIX MONTHS ENDED
                                                                     JUNE 30
                                                              ----------------------
                                                                1999         1998
                                                              ---------    ---------
                                                              (DOLLARS IN THOUSANDS)
<S>                                                           <C>          <C>
OPERATING ACTIVITIES
  Net income................................................  $  8,914     $  6,210
  Adjustments to reconcile net income to net cash provided
     (used) by operating activities:
     Depreciation and amortization..........................    10,326        7,512
                                                              --------     --------
                                                                19,240       13,722
  Changes in operating assets and liabilities excluding
     acquisitions of businesses:
     Accounts receivable....................................    (1,986)      (6,328)
     Inventories and other current assets...................   (10,033)     (15,542)
     Accounts payable and accrued expenses..................     5,659       (3,200)
     Other..................................................    (8,109)      (4,858)
                                                              --------     --------
       Net Cash Provided (Used) by Operating Activities.....     4,771      (16,206)

INVESTING ACTIVITIES
  Purchases of property, plant and equipment, net...........    (9,092)     (10,896)
  Costs of acquisitions, net of cash acquired...............   (35,664)      (6,036)
  Other.....................................................      (445)        (101)
                                                              --------     --------
     Net Cash (Used) by Investing Activities................   (45,201)     (17,033)

FINANCING ACTIVITIES
  Proceeds from bank arrangements...........................    49,000       36,500
  Issuance of 9.25% Senior Notes, net of deferred financing
     costs..................................................    49,508          -0-
  Payments on debt..........................................   (56,129)      (1,145)
  Purchase of treasury stock................................       -0-         (238)
  Issuance of common stock under stock option plan..........       -0-          239
                                                              --------     --------
          Net Cash Provided by Financing Activities.........    42,379       35,356
                                                              --------     --------
          Increase in Cash and Cash Equivalents.............     1,949        2,117
          Cash and Cash Equivalents at Beginning of
            Period..........................................     4,320        1,814
                                                              --------     --------
          Cash and Cash Equivalents at End of Period........  $  6,269     $  3,931
                                                              ========     ========
</TABLE>

See notes to consolidated financial statements.

                                        7
<PAGE>   8

                  PARK-OHIO INDUSTRIES, INC. AND SUBSIDIARIES

             NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED)

                                 JUNE 30, 1999

                             (DOLLARS IN THOUSANDS)

NOTE A -- BASIS OF PRESENTATION

     The consolidated financial statements include the accounts of Park-Ohio
Industries, Inc. and its subsidiaries ("Park-Ohio","the Company"). Park-Ohio is
a wholly owned subsidiary of Park-Ohio Holdings, Corp. as of June 10, 1998. All
significant intercompany transactions have been eliminated in consolidation.

     The accompanying unaudited consolidated financial statements have been
prepared in accordance with generally accepted accounting principles for interim
financial information and with the instructions to Form 10-Q and Article 10 of
Regulation S-X. Accordingly, they do not include all of the information and
footnotes required by generally accepted accounting principles for complete
financial statements. In the opinion of management, all adjustments (consisting
of normal recurring accruals) considered necessary for a fair presentation have
been included. Operating results for the three and six month periods ended June
30, 1999 are not necessarily indicative of the results that may be expected for
the year ending December 31, 1999. For further information, refer to the
consolidated financial statements and footnotes thereto included in the
Company's Annual Report on Form 10-K for the year ended December 31, 1998.

NOTE B -- ACQUISITIONS AND DISPOSITION

     During April 1998, the Company completed the acquisition of Direct
Fasteners Limited ("Direct") located in Ontario, Canada. The transaction was
accounted for as a purchase. Direct is a logistics provider of fastener related
components. The aggregate purchase price and the results of operations of Direct
prior to the date of acquisition were not material to the Company.

     During September 1998, the Company completed the sale of the assets of
Friendly and Safe Packaging Systems, Inc. to Kerr Group. The transaction had an
immaterial effect on the consolidated results of operations and financial
position of the Company.

     During October 1998, the Company acquired all of the stock of GIS
Industries, Inc. ("Gateway"). The transaction has been accounted for as a
purchase. Gateway is a logistics provider of fastener related components and a
manufacturer of fabricated metal products and fasteners. The aggregate purchase
price and the results of operations of Gateway prior to the date of acquisition
were not material to the Company.

     During the first six months of 1999, the Company acquired all of the stock
of The Metalloy Corporation ("Metalloy") and Columbia Nut and Bolt Corp.
("Columbia") and substantially all of the assets of St. Louis Screw & Bolt Co.
("St. Louis Screw") and PMC Industries, Inc. ("PMC") for cash. Metalloy is a
full service aluminum casting and machining company. Columbia is a logistics
provider of fastener related components. St. Louis Screw is a manufacturer of
bolts and PMC provides capital equipment and associated parts for the oil
drilling industry. Each of these transactions has been accounted for as a
purchase. The purchase price and the results of operations of each of these
businesses prior to the date of acquisition were not material to the Company.

     In July 1999, the Company acquired all of the outstanding stock of
Industrial Fasteners Corp. ("Industrial"), a logistics provider of fastener
related components. Industrial Fasteners also manufactures fasteners, primarily
screws, rivets, and pins. The acquisition will be accounted for as a purchase.
The purchase price and the results of operations of Industrial prior to the date
of acquisition were not material to the Company.

                                        8
<PAGE>   9
                  PARK-OHIO INDUSTRIES, INC. AND SUBSIDIARIES

      NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED) -- CONTINUED

NOTE C -- INVENTORIES

     The components of inventory consist of the following:

<TABLE>
<CAPTION>
                                                              JUNE 30     DECEMBER 31
                                                                1999         1998
                                                              --------    -----------
<S>                                                           <C>         <C>
In process and finished goods...............................  $137,219     $124,783
Raw materials and supplies..................................    32,602       25,269
                                                              --------     --------
                                                              $169,821     $150,052
                                                              ========     ========
</TABLE>

NOTE D -- ACCOUNTING PRONOUNCEMENTS

     In March 1998, the American Institute of Certified Public Accountants
("AICPA") issued Statement of Position ("SOP") 98-1, "Accounting for the Cost of
Computer Software Developed or Obtained for Internal Use". The SOP requires
companies to capitalize qualifying computer software costs incurred during the
application development stage. This statement was applied prospectively and is
effective for financial statements for fiscal years beginning after December 15,
1998. The impact of this new standard did not have a significant effect on the
Company's financial position or results of operations.

     In April 1998, the AICPA issued SOP 98-5, "Accounting for the Costs of
Start-up Activities". The SOP requires that costs of start-up activities be
expensed as incurred. The SOP is effective for fiscal years beginning after
December 15, 1998. The Company adopted the SOP in the first quarter of 1999. The
impact of adoption of the SOP on the Company's financial position, results of
operations or cash flows was immaterial.

     The Financial Accounting Standards Board's Statement of Financial
Accounting Standards No. 133, "Accounting for Derivative Instruments and Hedging
Activities" was issued in June 1998. Statement 133 requires derivatives to be
recorded on the balance sheet at fair value and establishes accounting for three
different types of hedges: hedges of changes in fair value of assets,
liabilities, or firm commitments; hedges of the variable cash flows of
forecasted transactions; and hedges of foreign currency exposures of net
investments in foreign operations. Statement 133 is effective for years
beginning after June 15, 2000 and is not expected to have a significant impact
on the Company's financial position or results of operations.

NOTE E -- SEGMENTS

     During the first quarter of 1999 the Company, upon completion of the
acquisition of Metalloy, redefined its operating segments. The Company retained
its Integrated Logistics Solutions ("ILS") segment and further segregated its
former Manufactured Products segment into an Aluminum Products segment and a
Manufactured Products segment. ILS is a leading national supplier of fasteners
(e.g. nuts, bolts and screws) and other industrial products to original
equipment manufacturers, other manufacturers and distributors. In connection
with the supply of such industrial products, ILS provides a variety of
value-added, cost-effective procurement solutions. Aluminum Products
manufactures cast aluminum components primarily for automotive original
equipment manufacturers. In addition, Aluminum Products also provides
value-added services such as design and engineering, machining and assembly.
Manufactured Products is a diverse group of manufacturing businesses that design
and manufacture a broad range of high quality products which includes capital
equipment, rubber products and forged and machined products for specific
customer applications.

                                        9
<PAGE>   10
                  PARK-OHIO INDUSTRIES, INC. AND SUBSIDIARIES

      NOTES TO CONSOLIDATED FINANCIAL STATEMENTS (UNAUDITED) -- CONTINUED

     Results by Business Segment were as follows:

<TABLE>
<CAPTION>
                                                   THREE MONTHS ENDED         SIX MONTHS ENDED
                                                        JUNE 30                   JUNE 30
                                                 ----------------------    ----------------------
                                                   1999         1998         1999         1998
                                                 ---------    ---------    ---------    ---------
                                                 (DOLLARS IN THOUSANDS -- EXCEPT PER SHARE DATA)
<S>                                              <C>          <C>          <C>          <C>
Net sales, including intersegment sales:
     ILS.......................................  $109,123     $ 92,370     $215,535     $184,828
     Aluminum products.........................    37,128        9,859       68,747       19,763
     Manufactured products.....................    40,666       38,536       74,038       72,677
                                                 --------     --------     --------     --------
                                                 $186,917     $140,765     $358,320     $277,268
                                                 ========     ========     ========     ========
Income before income taxes:
     ILS.......................................  $ 10,030     $  8,784     $ 20,995     $ 16,704
     Aluminum products.........................     4,144          472        7,115        1,105
     Manufactured products.....................     1,765        2,357        2,737        4,444
                                                 --------     --------     --------     --------
                                                   15,939       11,613       30,847       22,253
Amortization of excess purchase price over net
  assets acquired..............................      (894)        (609)      (1,708)        (990)
Corporate costs................................    (1,398)        (811)      (2,477)      (1,875)
Interest expense...............................    (5,693)      (4,341)     (11,071)      (8,493)
                                                 --------     --------     --------     --------
                                                 $  7,954     $  5,852     $ 15,591     $ 10,895
                                                 ========     ========     ========     ========
</TABLE>

<TABLE>
<CAPTION>
                                                 JUNE 30    DECEMBER 31
                                                   1999        1998
                                                 --------   -----------
<S>                                              <C>        <C>
Identifiable assets were as follows:
     ILS.......................................  $319,607    $288,713
     Aluminum products.........................    93,920      40,063
     Manufactured products.....................   158,696     147,009
     General corporate.........................     9,477      13,769
                                                 --------    --------
                                                 $581,700    $489,554
                                                 ========    ========
</TABLE>

NOTE F -- 9.25% SENIOR SUBORDINATED NOTES

     On June 3, 1999, the Company sold $50 million of its 9.25% Senior
Subordinated Notes due 2007. The Company used the net proceeds to reduce the
amount borrowed under its credit facility. Interest on the Senior Subordinated
Notes is payable semi-annually on June 1 and December 1 of each year.

                                       10
<PAGE>   11

                     INDEPENDENT ACCOUNTANTS' REVIEW REPORT

Board of Directors and Shareholder
Park-Ohio Industries, Inc.

     We have reviewed the accompanying consolidated balance sheet of Park-Ohio
Industries, Inc. and subsidiaries as of June 30, 1999, and the related
consolidated statements of income for the three months and six months ended June
30, 1999 and 1998, the consolidated statement of shareholder's equity for the
six months ended June 30, 1999 and the consolidated statements of cash flows for
the six months ended June 30, 1999 and 1998. These financial statements are the
responsibility of the Company's management.

     We conducted our review in accordance with standards established by the
American Institute of Certified Public Accountants. A review of interim
financial information consists principally of applying analytical procedures to
financial data, and making inquiries of persons responsible for financial and
accounting matters. It is substantially less in scope than an audit conducted in
accordance with generally accepted auditing standards, which will be performed
for the full year with the objective of expressing an opinion regarding the
financial statements taken as a whole. Accordingly, we do not express such an
opinion.

     Based upon our reviews, we are not aware of any material modifications that
should be made to the accompanying consolidated financial statements referred to
above for them to be in conformity with generally accepted accounting
principles.

     We have previously audited, in accordance with generally accepted auditing
standards, the consolidated balance sheet of Park-Ohio Industries, Inc. and
subsidiaries as of December 31, 1998 and the related consolidated statements of
income, shareholder's equity, and cash flows for the year then ended, not
presented herein, and in our report dated February 15, 1999, we expressed an
unqualified opinion on those consolidated financial statements. In our opinion,
the information set forth in the accompanying consolidated balance sheet as of
December 31, 1998, is fairly stated, in all material respects, in relation to
the consolidated balance sheet from which it is derived.

                                          /s/ Ernst & Young LLP

Cleveland, Ohio
July 20, 1999

                                       11
<PAGE>   12

ITEM 2. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS
OF OPERATIONS

     The consolidated financial statements of the Company include the accounts
of Park-Ohio Industries, Inc., a wholly-owned subsidiary of Park-Ohio Holdings
Corp., and its subsidiaries. All significant intercompany transactions have been
eliminated in consolidation. The financial information for the six and
three-month periods ended June 30, 1999 is not directly comparable on a
period-to-period basis to the financial information for the six and three-month
periods ended June 30, 1998 due to acquisitions made during, and subsequent to,
the second quarter of 1998. During 1998, the Company acquired two businesses for
$40.2 million. During October 1998, the Company acquired all of the shares of
GIS Industries, Inc. ("Gateway"). Gateway is a logistics provider of fastener
related components and a manufacturer of metal products and fasteners. During
April 1998, the Company acquired all of the shares of Direct Fasteners Limited
("Direct"), a logistics provider of fastener related components located in
Ontario, Canada. During the first six months of 1999, the Company acquired all
of the shares of The Metalloy Corporation ("Metalloy") and Columbia Nut and Bolt
Corp. ("Columbia") and substantially all of the assets of St. Louis Screw & Bolt
Co. ("St. Louis Screw") and PMC Industries, Inc. ("PMC") for an aggregate
purchase price of $35.7 million. Metalloy is a full service aluminum casting and
machining company. Columbia is a logistics provider of fastener related
components. St. Louis Screw is a manufacturer of bolts and PMC produces capital
equipment and associated parts for the oil drilling industry. In July, 1999, the
Company acquired all of the outstanding stock of Industrial Fasteners Corp.
("Industrial"). Industrial is a logistics provider of fastener related
components and manufactures fasteners, primarily screws, rivets, and pins. All
acquisitions are accounted for as purchases and consequently their results are
included in the consolidated financial statements from their respective dates of
acquisition.

OVERVIEW

     The Company operates diversified manufacturing and logistics businesses
that serve a wide variety of industrial markets. The Company manages its
businesses based upon three operating segments: Integrated Logistics Solutions
("ILS"), Aluminum Products, and Manufactured Products. ILS is a leading national
supplier of fasteners (e.g., nuts, bolts and screws) and other industrial
products to original equipment manufacturers ("OEMs"), other manufacturers and
distributors. In connection with the supply of such industrial products, ILS
provides a variety of value-added, cost-effective procurement solutions. The
principal customers of ILS are in the transportation, industrial, electrical and
lawn and garden equipment industries. Aluminum Products manufactures cast
aluminum components primarily for automotive OEMs. Aluminum Products also
provides value-added services such as design and engineering, machining and
assembly. Manufactured Products operates a diverse group of niche manufacturing
businesses that design and manufacture a broad range of high quality products
engineered for specific customer applications. The principal customers of
Manufactured Products are OEMs and end-users in the automotive, railroad, truck
and aerospace industries.

     Between 1993 and 1998, the Company has grown significantly, both internally
and through acquisitions. Over this period, the Company's net sales increased at
a 42% compounded annual growth rate ("CAGR"), from $94.5 million to $551.8
million, and income from continuing operations on a fully taxed basis increased
at a 40% CAGR from $2.4 million to $13.1 million.

     Recent growth has been primarily attributable to the Company's strategy of
making selective acquisitions in order to complement internal growth.
Historically, the Company has acquired underperforming businesses with potential
for: (i) significant cost reductions through improved labor, supplier and
customer relations and increased purchasing power and (ii) revenue enhancement
due to better asset utilization and management practices, as well as increased
access to capital. The Company's internal growth has been driven primarily by
the addition of ILS customers under total fastening service ("TFS") contracts
and by the leveraging of existing customer relationships in the Aluminum and
Manufactured Products segments.

     Between January 1, 1994 and June 30, 1999, the Company's continuing
operations incurred $73.3 million of capital expenditures, the majority of which
was used to expand and upgrade existing manufacturing facilities and enhance the
Company's management information systems.

                                       12
<PAGE>   13

RESULTS OF OPERATIONS

FIRST HALF 1999 VERSUS FIRST HALF 1998

     Net sales increased by $81.0 million, or 29%, from $277.3 million for the
first half of 1998 to $358.3 million for the first half of 1999. This growth
results from acquisitions that the Company made subsequent to June 30, 1998 and
relates primarily to the ILS and the Aluminum Products segments. For ILS, the
growth in net sales amounted to $30.7 million of which $23.8 million related to
acquisitive growth and the remainder to internal growth. For Aluminum Products,
net sales increased by $49.0 million and related primarily to the acquisition of
Metalloy.

     Gross profit increased by $17.9 million, or 38%, from $46.9 million for the
first half of 1998 to $64.8 million for the first half of 1999 and is directly
related to acquisitions made in the preceding twelve months. The Company's
consolidated gross margin increased to 18.1% for the first six months of 1999
from 16.9% for the first six months of 1998. This increase in consolidated gross
margin was due to increased margins in both the Aluminum Products and ILS
segments offset by a slight decline in gross margins in the Manufactured
Products segment. The increase in Aluminum Products was due to increased
production at General Aluminum thereby allocating fixed manufacturing overhead
over a greater production base and to the acquisition of Metalloy that has a
higher overall gross margin than the existing business. The increase in margins
in the ILS segment is a result of spreading operating costs over a growing
revenue base resulting from the recent acquisitions in ILS and favorable raw
material sourcing. The decline in margins in the Manufactured Products segment
results primarily from reduced production activity at Ajax Manufacturing Company
that caused fixed overhead costs to be spread over a reduced production base.

     Selling, general and administrative costs increased by 39% to $38.1 million
for the first six months of 1999 from $27.5 million for the first six months of
1998. The increase was primarily related to acquisitions that have been
consummated subsequent to June 30, 1998. Consolidated selling, general and
administrative expenses as a percentage of net sales were 10.6% during the
current period and 9.9% for the first six months of 1998. The increase in rate
for 1999 is caused by the acquisitions having a higher administrative expense
relationship to sales than the existing core operations.

     Interest expense increased by $2.6 million from $8.5 million for the
six-month period ended June 30, 1998 to $11.1 million for the six-month period
ended June 30, 1999 due to higher average debt outstanding during the current
period offset by lower average interest rates in 1999 versus 1998. For the
six-month period ended June 30, 1999, the Company averaged outstanding
borrowings of $270.9 million as compared to $194.2 million outstanding for the
six months ended June 30, 1998. The $76.7 million increase related primarily to
acquisitions completed during the latter part of 1998 and the first half of
1999. The average borrowing rate of 8.2% for the six months ended June 30, 1999
is 58 basis points lower than the average rate of 8.8% for the six months ended
June 30, 1998 primarily because of increased borrowings under the Company's bank
revolving credit which carries lower effective interest rates.

     The effective income tax rate for the six-month periods ended June 30, 1999
and 1998 was 43%. At December 31, 1998, subsidiaries of the Company had $1.1
million of net operating loss carryforwards for tax purposes.

SECOND QUARTER 1999 VERSUS SECOND QUARTER 1998

     Net sales increased by $46.1 million, or 33%, from $140.8 million for the
quarter ended June 30,1998 to $186.9 million for the three months ended June 30,
1999. This growth results primarily from acquisitions that the Company made
subsequent to June 30, 1998 and relates primarily to the ILS and the Aluminum
Products segments. For ILS, the growth in net sales amounted to $16.8 million of
which $11.0 million related to acquisitive growth and the remainder to internal
growth. For Aluminum Products, net sales increased by $27.3 million and related
primarily to the acquisition of Metalloy.

     Gross profit increased by $10.2 million, or 43%, from $23.6 million for the
quarter ended June 30, 1998 to $33.8 million for the quarter ended June 30, 1999
and is directly related to acquisitions made in the preceding twelve months. The
Company's consolidated gross margin increased to 18.1% for the current period
from

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<PAGE>   14

16.8% for the quarter ended June 30, 1998. All segments experienced increased
margins compared to the year earlier period. The increase in Aluminum Products
was due to increased production at General Aluminum thereby allocating fixed
manufacturing overhead over a greater production base and to the acquisition of
Metalloy, which has a higher overall gross margin than the existing business.
The increase in margins in both the ILS and Manufactured Products segments is a
result of spreading operating costs over a growing revenue base and in ILS
favorable raw material sourcing.

     Selling, general and administrative costs increased by 51% to $20.2 million
for the quarter ended June 30,1999 from $13.4 million for the quarter ended June
30, 1998. The majority of the increase was related to acquisitions that have
been consummated subsequent to the second quarter of 1998. Consolidated selling,
general and administrative expenses as a percentage of net sales were 10.8% of
net sales in the current period and 9.5% of net sales in the corresponding
period of the prior year. The increase in rates is caused by the acquisitions
having a higher administrative expense relationship to sales than the existing
core operations.

     Interest expense increased by $1.4 million from $4.3 million for the
quarter ended June 30, 1998 to $5.7 million for the quarter ended June 30, 1999
due to higher average debt outstanding during the current period offset by lower
average interest rates in 1999 versus 1998. For the quarter ended June 30, 1999,
the Company averaged outstanding borrowings of $276.5 million as compared to
$204.8 million outstanding for the quarter ended June 30, 1998. The $71.7
million increase related to acquisitions completed during the latter part of
1998 and the first half of 1999. Interest rates averaged 8.2% for the quarter
ended June 30, 1999 compared to 8.5% for the quarter ended June 30, 1998.

SEASONALITY; VARIABILITY OF OPERATING RESULTS

     As a result of the significant growth in our net sales and operating income
in recent years, seasonal fluctuations have been substantially mitigated.
However, we perform scheduled plant maintenance in the third quarter to coincide
with customer plant shut downs.

     The timing of orders placed by our customers has varied with, among other
factors, orders for customers' finished goods, customer production schedules,
competitive conditions and general economic conditions. The variability of the
level and timing of orders has, from time to time, resulted in significant
periodic and quarterly fluctuations in the operations of our business units.
This variability is particularly evident at the capital equipment businesses,
included in the Manufactured Products segment, which typically ship a few large
systems per year.

FORWARD-LOOKING STATEMENTS

     This Form 10-Q contains certain statements that are "forward-looking
statements" within the meaning of Section 27A of the Securities Act and Section
21E of the Exchange Act. Certain statements in this Management's Discussion and
Analysis of Financial Condition and Results of Operations contain forward-
looking statements, including without limitation, discussion regarding the
Company's anticipated levels and funding of capital expenditures and the Year
2000 conversion. Forward-looking statements are necessarily subject to risks,
uncertainties and other factors, many of which are outside our control, which
could cause actual results to differ materially from such statements. These
uncertainties and other factors include such things as: general business
conditions, competitive factors, including pricing pressures and product
innovation and quality; raw material availability and pricing; changes in our
relationships with customers and suppliers; our ability to successfully
integrate recent and future acquisitions into its existing operations; changes
in general domestic economic conditions such as inflation rates, interest rates
and tax rates; increasingly stringent domestic and foreign governmental
regulations including those affecting the environment; inherent uncertainties
involved in assessing our potential liability for environmental
remediation-related activities; the outcome of pending and future litigation and
other claims; dependence on the automotive industry; dependence on key
management; dependence on information systems; and our ability, as well as the
ability of our vendors and customers to achieve Year 2000 compliance. Any
forward-looking statement speaks only as of the date on which such statement is
made, and we undertake no obligation to update any forward-looking statement,
whether as a result of new information, future events or otherwise. In light of
these and other uncertainties, the

                                       14
<PAGE>   15

inclusion of a forward-looking statement herein should not be regarded as a
representation by us that the our plans and objectives will be achieved.

REVIEW BY INDEPENDENT ACCOUNTANTS

     The consolidated financial statements at June 30, 1999, and for the three
and six-month periods ended June 30, 1999 and 1998, have been reviewed, prior to
filing, by Ernst & Young LLP, our independent accountants, and their report is
included herein.

                                       15
<PAGE>   16

                                    PART II

                               OTHER INFORMATION

ITEM 6. EXHIBITS AND REPORTS ON FORM 8-K

     The following exhibits are included herein:

          (4) Indenture dated June 3, 1999 by and among Park-Ohio Industries,
              Inc. and Norwest Bank Minnesota, N.A., as trustee (filed as
              Exhibit 4.2 of the Company's Registration Statement on Form S-4,
              filed July 23, 1999, SEC File No. 333-83117 and incorporated by
              reference and made a part hereof).

          (15) Letter re: unaudited financial information

          (27) Financial data schedule (Electronic filing only)

     We did not file any reports on Form 8-K during the three months ended June
30, 1999.

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<PAGE>   17

                                   SIGNATURE

     Pursuant to the requirements of the Securities Exchange Act of 1934, the
Registrant has caused this report to be signed on its behalf by the undersigned,
thereunto duly authorized.

                                                 PARK-OHIO INDUSTRIES, INC.
                                            ------------------------------------
                                                        (Registrant)

                                            By       /s/ J. S. WALKER
                                             -----------------------------------
                                            Name:  J. S. Walker
                                            Title:    Vice President and Chief
                                                Financial Officer

                                            Dated       August 13, 1999
                                               ---------------------------------

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<PAGE>   18

                                 EXHIBIT INDEX

                         QUARTERLY REPORT ON FORM 10-Q

                  PARK-OHIO INDUSTRIES, INC. AND SUBSIDIARIES
                      FOR THE QUARTER ENDED JUNE 30, 1999

<TABLE>
<CAPTION>
EXHIBIT
-------
<C>        <S>
    4      Indenture dated June 3, 1999 by and among Park-Ohio
           Industries, Inc. and Norwest Bank Minnesota, N.A., as
           trustee (filed as Exhibit 4.2 of the Company's Registration
           Statement on Form S-4, filed July 23, 1999, SEC File No.
           333-83117 and incorporated by reference and made a part
           hereof).
   15      Letter re: unaudited financial information
   27      Financial data schedule (Electronic filing only)
</TABLE>

                                       18