The Department of Defense, through the NAVSUP Weapon Systems Support office, is seeking to procure four units of the Coupling, Drive Shaft (NSN 7R-1615-014456378-VH) from Sikorsky Aircraft Corp, the sole source for this item. This procurement is critical as the coupling is a key component in helicopter rotor blades and drive mechanisms, and the government does not possess the necessary data to source this part from alternative manufacturers. Interested parties are invited to submit capability statements or proposals within 45 days of this notice, with the anticipated award date set for December 2024. For further inquiries, contact Anna M. Kiessling at (215) 697-3752 or via email at anna.m.kiessling.civ@us.navy.mil.