This is a 100% small business set-aside solicitation for a firm-fixed-price purchase order to supply 298 each of a self-locking barrel nut (NSN 5310-01-061-3323). Offerors must provide clear traceability to an approved OEM (SPS Technologies, Sikorsky Aircraft, or Harvard Industries) and furnish a Certificate of Conformance; only new or approved new surplus parts are acceptable. No drawings, specifications, or schematics are available from the agency, and quotations for new surplus must include a photo of the item or packaging. Requested delivery is September 30, 2026, with award anticipated on or about September 7, 2026. Interested parties should review the attached terms and conditions for clauses, instructions, and evaluation criteria before submitting a quotation.