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 5965-00-886-8511
NSN 5835-01-364-6830
NSN 5920-00-168-8084
NSN 7035-01-354-9382
NSN 6240-01-463-7057
NSN 6130-01-367-6563
NSN 5975-01-536-9613
NSN 6135-01-415-1163
NSN 6650-01-256-0304
NSN 2925-01-459-8093
NSN 6650-00-202-4540
NSN 7035-01-440-1862