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 5935-00-340-1611
NSN 7035-01-429-0431
NSN 6320-01-089-9086
NSN 5975-00-840-5844
NSN 5965-01-561-8862
NSN 5965-00-100-1291
NSN 5996-01-421-4417
NSN 5935-01-503-5421
NSN 5965-01-353-9195
NSN 2925-01-606-3201
NSN 6145-00-378-3836
NSN 6135-01-074-2529