5310-01-693-8809 (4589-006)
NSN 5310-01-693-8809 (NIIN 01-693-8809) 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 4589-006 (Fatigue Technology, Inc, CAGE 51439); also referenced as FMW-759-45510-A (Fatigue Technology, Inc).
NIIN assigned March 2021; DEMIL A (none required); ESD/EMI-sensitive.