A circular-shaped item designed to maintain predetermined distance between assembled parts and/or for distributing pressure or preventing endwise movement between member parts. It has a solid cross-section and two flat parallel bearing surfaces. The distance between the bearing surfaces perpendicular to the axis of the centrally located hole shall not exceed 25 percent of the outside diameter. The diameter of the centrally located hole must exceed 75 percent of the outside diameter. Excludes laminated items. For items manufactured from impregnated graphite or lubricated nonmetallic materials, excluding felt or plastics, see gasket. For items manufactured from lubricated plastics, see bearing, washer, thrust. For items manufactured from lubricated felt, see felt, mechanical, preformed. Excludes disk, valve; insulator washer; and shim. See also spacer, plate and spacer, sleeve.
Classification: Copper screws, nuts, bolts, rivets, and other fasteners not threaded
NSN 5965-01-558-5380
NSN 5990-00-113-6137
NSN 5855-01-278-8922
NSN 6240-01-411-5630
NSN 5960-00-830-5483
NSN 6135-01-572-3296
NSN 5985-01-641-6477
NSN 5835-01-219-0586
NSN 6650-01-275-9778
NSN 5975-00-401-5365
NSN 5895-00-497-4903
NSN 5910-01-180-1180