5310-00-219-7548 (806866D1)
NSN 5310-00-219-7548 (NIIN 00-219-7548) 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 806866D1 (Curtiss-Wright Controls, Inc., CAGE 0AHP5).
Key specs: 60 rockwell c minimum hardness; full characteristics table below. NIIN assigned January 1963; DEMIL A (none required). Supersedes 5120-00-033-0722 (1963).