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 5998-01-648-2656
NSN 5990-00-402-7721
NSN 6645-01-525-7493
NSN 6105-01-268-5145
NSN 5990-00-905-6472
NSN 6130-01-536-0781
NSN 5915-01-630-5696
NSN 5998-01-263-2258
NSN 5965-01-519-1929
NSN 6240-00-020-4709
NSN 5895-01-646-6403
NSN 5925-01-500-5056