Exhibit 10.2



 Exhibit 10.2 

NN, Inc. 
 $300,000,000 

10.25% Senior Notes due 2020 

Joinder to the Purchase Agreement 

October 19, 2015 
 SUNTRUST
ROBINSON HUMPHREY, INC. 
     As Representatives of the Initial Purchasers 

303 Peachtree Street, 10th Floor 
 Atlanta, GA 30308 

Ladies and Gentlemen: 
 Reference is made to the
Purchase Agreement (the “Purchase Agreement”) dated October 19, 2015, initially among NN, Inc., a Delaware corporation (the “Company”), the NN Guarantors (as defined in the Purchase Agreement) and you, as
representative for the Initial Purchasers, concerning the purchase of Securities (as defined in the Purchase Agreement) from the Company by the Initial Purchasers. Capitalized terms used herein but not defined herein shall have the meanings assigned
to such terms in the Purchase Agreement. This is the Joinder Agreement (this “Agreement”) referred to in Section 2(m) of the Purchase Agreement. 

Each of the Guarantors listed on Schedule I hereto (the “PEP Guarantors”) agrees that this Agreement is being executed and
delivered in connection with the issue and sale of the Securities pursuant to the Purchase Agreement and to induce the Initial Purchasers to purchase the Securities thereunder. This Agreement is being executed on the Closing Date. 

1. Joinder. Each of the parties hereto hereby agrees to become bound by the terms, conditions and other provisions of the Purchase
Agreement with all attendant rights, duties and obligations stated therein, with the same force and effect as if originally named therein as a Guarantor and as if such party executed the Purchase Agreement on the date thereof. 

2. Representations, Warranties and Agreements of the Guarantors. Each of the PEP Guarantors party hereto represents and warrants to,
and agrees with, the Initial Purchasers on and as of the date hereof that: 
 (a) Each of the PEP Guarantors has the
corporate or limited liability power to execute and deliver this Agreement and all corporate or limited liability action required to be taken by each of them for the due and proper authorization, execution, delivery and


  
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performance of this Agreement and the consummation of the transactions contemplated hereby has been duly and validly taken; this Agreement has been duly authorized, executed and delivered by each
of the PEP Guarantors party hereto and constitutes a valid and legally binding agreement of each of the PEP Guarantors party hereto, enforceable against each of the PEP Guarantors party hereto in accordance with its terms, except to the extent that
such enforceability may be limited by applicable bankruptcy, insolvency, fraudulent conveyance, reorganization, moratorium and other similar laws affecting creditors’ rights generally and by general equitable principles (whether considered in a
proceeding in equity or at law). 
 (b) the representations, warranties and agreements of the PEP Guarantors set forth in
Section 2 of the Purchase Agreement were true and correct on and as of the date of the Purchase Agreement and are true and correct on and as of the date hereof. 

3. Governing Law. This Agreement and any claim, controversy or dispute arising under or related to this Agreement shall be governed by
and construed in accordance with the laws of the State of New York. 
 4. Counterparts. This Agreement may be executed in one or more
counterparts (which may include counterparts delivered by any standard form of telecommunication) and, if executed in more than one counterpart, the executed counterparts shall each be deemed to be an original, but all such counterparts shall
together constitute one and the same instrument. 
 5. Amendments. No amendment or waiver of any provision of this Agreement, nor any
consent or approval to any departure therefrom, shall in any event be effective unless the same shall be in writing and signed by the parties hereto. 

6. Headings. The headings herein are inserted for convenience of reference only and are not intended to be part of, or to affect the
meaning or interpretation of, this Agreement. 







 If the foregoing is in accordance with your understanding, please indicate your acceptance of
this Agreement by signing in the space provided below. 
  

			
	Very truly yours,
	
	PRECISION ENGINEERED PRODUCTS HOLDINGS, INC.
		
	By:	 	 /s/ James H. Dorton

		 	Name: James H. Dorton
		 	Title: Vice President
	
	PRECISION ENGINEERED PRODUCTS LLC
		
	By:	 	 /s/ James H. Dorton

		 	Name: James H. Dorton
		 	Title: Vice President
	
	BRAININ-ADVANCE INDUSTRIES LLC
		
	By:	 	 /s/ James H. Dorton

		 	Name: James H. Dorton
		 	Title: Vice President
	
	POLYMETALLURGICAL LLC
		
	By:	 	 /s/ James H. Dorton

		 	Name: James H. Dorton
		 	Title: Vice President
	
	BOSTON ENDO-SURGICAL TECHNOLOGIES LLC
		
	By:	 	 /s/ James H. Dorton

		 	Name: James H. Dorton
		 	Title: Vice President


 [Signature Page to Joinder to the Purchase Agreement] 







 
			
	LACEY MANUFACTURING COMPANY, LLC
		
	By:	 	 /s/ James H. Dorton

		 	Name: James H. Dorton
		 	Title: Vice President
	
	CONNECTICUT PLASTICS LLC
		
	By:	 	 /s/ James H. Dorton

		 	Name: James H. Dorton
		 	Title: Vice President
	
	WAUCONDA TOOL & ENGINEERING LLC
		
	By:	 	 /s/ James H. Dorton

		 	Name: James H. Dorton
		 	Title: Vice President
	
	ADVANCED PRECISION PRODUCTS, INC.
		
	By:	 	 /s/ James H. Dorton

		 	Name: James H. Dorton
		 	Title: Vice President
	
	HOWESTEMCO, LLC
		
	By:	 	 /s/ James H. Dorton

		 	Name: James H. Dorton
		 	Title: Vice President
	
	PREMCO, INC.
		
	By:	 	 /s/ James H. Dorton

		 	Name: James H. Dorton
		 	Title: Vice President


 [Signature Page to Joinder to the Purchase Agreement] 







 
			
	PROFILES INCORPORATED
		
	By:	 	 /s/ James H. Dorton

		 	Name: James H. Dorton
		 	Title: Vice President
	
	HOLMED, LLC
		
	By:	 	 /s/ James H. Dorton

		 	Name: James H. Dorton
		 	Title: Vice President
	
	GENERAL METAL FINISHING LLC
		
	By:	 	 /s/ James H. Dorton

		 	Name: James H. Dorton
		 	Title: Vice President
	
	MATRIX I, LLC
		
	By:	 	 /s/ James H. Dorton

		 	Name: James H. Dorton
		 	Title: Vice President
	
	TRIGON INTERNATIONAL LLC
		
	By:	 	 /s/ James H. Dorton

		 	Name: James H. Dorton
		 	Title: Vice President


 [Signature Page to Joinder to the Purchase Agreement] 







 Schedule I 

Guarantors 
  

			
	1.	 	Precision Engineered Products Holdings, Inc.
		
	2.	 	Precision Engineered Products LLC
		
	3.	 	Brainin-Advance Industries LLC
		
	4.	 	Polymetallurgical LLC
		
	5.	 	Boston Endo-Surgical Technologies LLC
		
	6.	 	Lacey Manufacturing Company, LLC
		
	7.	 	Connecticut Plastics LLC
		
	8.	 	Wauconda Tool & Engineering LLC
		
	9.	 	Advanced Precision Products, Inc.
		
	10.	 	HowesTemco, LLC
		
	11.	 	Premco, Inc.
		
	12.	 	Profiles Incorporated
		
	13.	 	Holmed, LLC
		
	14.	 	General Metal Finishing LLC
		
	15.	 	Matrix I LLC
		
	16.	 	Trigon International LLC


  
 Sch. 1