EXHIBIT 32.1

CERTIFICATION PURSUANT TO 18 U.S.C. SECTION 1350 AS ADOPTED PURSUANT TO

SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

Pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, each of the undersigned officers of Greatbatch, Inc. (the “Company”), does hereby certify, to such officer’s knowledge, that:

The Annual Report on Form 10-K for the fiscal year ended January 2, 2015 (the “Form 10-K”) of the Company fully complies with the requirements of section 13(a) or 15(d) of the Securities Exchange Act of 1934 and the information contained in the Form 10-K fairly presents, in all material respects, the financial condition and results of operations of the Company.

Dated:	March 3, 2015	/s/ Thomas J. Hook
		Thomas J. Hook
		President and Chief Executive Officer
		(Principal Executive Officer)
Dated:	March 3, 2015	/s/ Michael Dinkins
		Michael Dinkins
		Executive Vice President and Chief Financial Officer
		(Principal Financial Officer)