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 6685-01-426-8929
NSN 6145-01-398-0607
NSN 6150-00-245-4461
NSN 5985-01-217-7849
NSN 5990-00-140-4559
NSN 6110-01-430-2408
NSN 6145-00-281-8161
NSN 5996-01-367-6557
NSN 5960-01-289-5272
NSN 5985-01-503-2314
NSN 6650-01-065-2796
NSN 5935-01-071-0802