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 6240-00-793-7969
NSN 6240-01-350-3533
NSN 6620-00-701-3575
NSN 6650-00-388-4517
NSN 6145-01-658-6995
NSN 5905-01-391-1235
NSN 2925-01-197-7864
NSN 6620-00-267-5273
NSN 6130-01-339-3754
NSN 6130-01-239-6642
NSN 5930-01-558-3310
NSN 5905-00-677-4493