5325-00-842-7853 (5365008427853)
NSN 5325-00-842-7853 (NIIN 00-842-7853) 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 5365008427853; also referenced as 8351583 (U S Army Tank Automotive Command).
Key specs: 43 to 50 rockwell c material hardness; full characteristics table below. NIIN assigned January 1962; DEMIL A (none required); unit of issue EA (each), $8.83 gov standard price; export Schedule B 9606.10.0000; ships at 0.08 lb / 0.0041 cu ft.