The Department of Defense, specifically the Department of the Navy through NAVSUP Weapon Systems Support, is seeking proposals for the procurement of 20 units of a hinge bolt, identified by NSN 1R-1680-016484172-RQ. This item is classified as flight critical, necessitating government source approval prior to contract award, as the technical data available does not support full and open competition. Interested vendors must provide comprehensive documentation as outlined in the NAVSUP Source Approval Information Brochures, including evidence of prior production experience or a copy of their source approval request if currently under evaluation. For further inquiries, interested parties can contact Kathryn S. Hull at (215) 697-6646 or via email at KATHRYN.S.HULL.CIV@US.NAVY.MIL.