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 5960-00-159-7309
NSN 5920-00-401-6790
NSN 6320-01-294-7161
NSN 6620-00-562-6337
NSN 6645-01-110-4491
NSN 6110-01-057-9157
NSN 7035-01-380-6538
NSN 5960-01-224-8022
NSN 5920-01-515-1540
NSN 2925-01-076-5219
NSN 2925-01-633-4048
NSN 5975-00-879-8430