5310-00-224-0746 (0061)
NSN 5310-00-224-0746 (NIIN 00-224-0746) is a lock washer in Federal Supply Class 5310, Nuts And Washers — a washer, usually round, with a centrally-located hole. Manufacturer part number 0061; also referenced as FFW84 (Federal Specifications Promulgated); 305-116-0401 (Allmetal Screw Products Corp); MS35338-125B, MS35338-135B (National Aerospace Standards); 021.450505 (Aim Infrarot-Module Gmbh), plus 9 more in the reference table below.
Key specs: 35 to 43 rockwell c hardness; full characteristics table below. NIIN assigned March 1970; DEMIL A (none required); unit of issue EA (each), $0.03 gov standard price; ships at 0.0002 lb / 0 cu ft. Supersedes 5310-01-559-4413 (2011).