5310-00-059-2653 (11729466)
NSN 5310-00-059-2653 (NIIN 00-059-2653) is a flat washer in Federal Supply Class 5310, Nuts And Washers — a washer having a centrally located hole with a solid or laminated cross-section and two flat parallel bearing surfaces. Manufacturer part number 11729466 (Combat Capabilities Development, CAGE 19200); also referenced as 720-02006-02 (GTE Communication Systems Corp).
Key specs: 100 to 110 rockwell r hardness; full characteristics table below. NIIN assigned January 1961; DEMIL A (none required); ESD/EMI-sensitive; unit of issue EA (each), $2.10 gov standard price.