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 6610-01-287-9814
NSN 5930-01-619-0113
NSN 5925-00-559-7527
NSN 6650-01-421-8424
NSN 5925-01-311-5322
NSN 5925-00-979-5856
NSN 5998-01-138-9095
NSN 5915-01-418-3639
NSN 5855-00-079-2370
NSN 6650-01-275-3112
NSN 5945-01-519-8004
NSN 5990-00-155-2306