The Department of Defense, through the Defense Logistics Agency (DLA) Aviation at Philadelphia, PA, is soliciting proposals for the procurement of a coupling shaft rigid, classified under the NAICS code 333612, which pertains to Speed Changer, Industrial High-Speed Drive, and Gear Manufacturing. This solicitation requires that all proposals come from Government-approved sources, as quotes from non-approved sources will be deemed technically unacceptable; additionally, dealers or distributors must provide an authorized distributor letter from the manufacturer at the time of submission. The items are critical for military applications, emphasizing the importance of quality and compliance with specific inspection and acceptance criteria. Interested vendors should contact Malcolm Fils at 215-737-0422 or via email at MALCOLM.FILS@DLA.MIL for further details and to ensure compliance with the submission requirements.