5325-00-817-9073 (4F5069)
NSN 5325-00-817-9073 (NIIN 00-817-9073) is a retaining ring in Federal Supply Class 5325, Fastening Devices — a resilient metal item, circular or nearly circular, which is designed to be inserted into an internal or external groove and retained by its own spring action. Manufacturer part number 4F5069 (Caterpillar Inc, CAGE 11083).
Key specs: 44 to 52 rockwell c material hardness; 225000 psi minimum tensile strength; full characteristics table below. NIIN assigned January 1960; DEMIL A (none required); export Schedule B 9606.10.0000. Supersedes 5365-00-352-7785 (1974).