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 5960-01-026-3505
NSN 5985-00-948-8913
NSN 5996-00-205-2933
NSN 5985-01-237-4011
NSN 6240-00-480-1558
NSN 5920-01-115-9710
NSN 5996-01-190-5160
NSN 6685-00-144-6362
NSN 2925-01-543-0073
NSN 6135-01-180-9611
NSN 5910-01-177-6210
NSN 6645-01-432-7026