This is a procurement for 35 units of a Shouldered Shaft (Part Number 42357-87) from the approved source, Triumph Gear Systems Inc. The services will be performed with delivery to Hill Air Force Base in Utah, and the required delivery timeline is 462 days after award. Proposals will be evaluated on a best-value basis considering Price, Past Performance, Delivery, and Small Business Participation. Offers must be submitted via the DIBBS website or by email, and the solicitation will be available on or about April 27, 2026. This is a set-aside for other than full and open competition, and all offers must be in English and U.S. dollars.