# SAM #N3904027Q5986 Sole-source purchase of four sets of KARON-coated center blocks and pins **Buyer:** Portsmouth Naval Shipyard **Posted:** November 09, 2026 **Respond By:** November 10, 2026 **Identifier:** N3904027Q5986 **NAICS:** 332812, 332999 Portsmouth Naval Shipyard plans a sole-source purchase of Kamatics KARON-coated center blocks and pins for Navy shipyard work. - **Buyer:** Portsmouth Naval Shipyard, Department of the Navy, under NAVSEA. - **Procurement:** Sole-source purchase from Kamatics Corporation, identified as the proprietary source for KARON coating and its supporting data, drawings, equipment, and approved processes. - **Quantity:** Four sets of center blocks and pins with KARON Type-B and Type-V coating. - **Drawing references:** 7067173/XA (Note 7029), 7067170/XA (Note 7008), and 7068530/XA (Note 7001). - **Delivery dates:** November 30, 2026, and December 4, 2026; December 4 is listed twice in the attachment summary. - **Part numbers and pricing:** No part numbers or contract price are stated in the provided materials. ### Description

This notice serves as The Portsmouth Naval Shipyards intent to sole source the following requirement: Karon Type B & Type V Coating for Blocks and Pins. The statutory authority permitting other than full and open competition is 10 U.S.C. as implemented by Federal Acquisition Regulation (FAR) 6.302-1 (Only one responsible source and no other supplies or services will satisfy agency requirements). Kamatics Corporation (Cage Code: 50632) is the proprietary source for Karon Coating, thus owns the proprietary data, including drawings, equipment and approved processes required to perform this work.

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