5310-01-015-1853 (WCL22N-3)
NSN 5310-01-015-1853 (NIIN 01-015-1853) is a recessed washer in Federal Supply Class 5310, Nuts And Washers — a washer of any peripheral shape having a centrally located hole. Manufacturer part number WCL22N-3 (Sps Technologies, LLC, CAGE 56878).
Key specs: 39 to 43 rockwell c hardness; full characteristics table below. NIIN assigned January 1976; DEMIL A (none required); unit of issue EA (each), $3.00 gov standard price; ships at 0.001 lb / 0 cu ft.