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 5910-00-913-1410
NSN 5920-01-072-5179
NSN 6685-01-634-0611
NSN 2925-01-412-9520
NSN 6135-00-798-1425
NSN 6645-01-128-9353
NSN 6105-00-782-1857
NSN 6610-00-066-5451
NSN 6645-01-099-6887
NSN 5855-00-149-0766
NSN 6130-01-056-5251
NSN 5965-01-005-6617