The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support Mechanicsburg, is soliciting proposals for the procurement of 500 Stem Retaining Nuts for a size 3 inch Ball Valve, classified under NAICS code 332911 (Industrial Valve Manufacturing). These components are critical for shipboard systems, where the use of incorrect or defective materials could lead to severe safety risks, including personnel injury or loss of vital shipboard systems. Interested vendors must adhere to stringent quality assurance and certification requirements, including compliance with various military specifications and standards, with a contract award anticipated following a thorough evaluation of past performance. For inquiries, potential bidders can contact Robert H. Langel at 717-605-3353 or via email at ROBERT.H.LANGEL.CIV@US.NAVY.MIL, with the proposal submission deadline extended to allow access to necessary drawings.