This opportunity is for the acquisition of 117 units of a specific part (NSN 7R-1240-014696497-QF) that requires engineering source approval due to its flight-critical nature. Only previously approved sources have been solicited, and new sources must undergo a qualification process that typically cannot be completed in time to delay award. Delivery is FOB origin, and the Government intends to solicit and negotiate with only one source under FAR 6.302-1. All responsible sources may submit proposals or capability statements, but offers from unapproved sources must include all data required by the NAVSUP WSS Source Approval Brochure. Proposals will be considered if received within 45 days of the publication date.