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 6650-01-018-8281
NSN 5855-00-013-1244
NSN 6135-00-191-6444
NSN 7035-01-013-9889
NSN 5996-01-119-2720
NSN 5998-01-068-3971
NSN 6110-01-614-7436
NSN 6645-01-227-2036
NSN 5990-00-415-5351
NSN 5990-00-121-2134
NSN 5985-01-613-6090
NSN 5925-01-558-6304