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 5925-01-035-7440
NSN 6240-00-405-2384
NSN 6220-01-518-8139
NSN 6320-00-216-8779
NSN 5999-00-917-9722
NSN 6145-00-577-3505
NSN 5925-00-290-4451
NSN 6320-01-384-3850
NSN 5910-01-213-7516
NSN 5925-01-173-7286
NSN 6135-01-606-0596
NSN 5925-01-322-2046