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 5998-01-524-2974
NSN 5975-01-025-8155
NSN 7035-01-292-2580
NSN 5930-01-413-5009
NSN 5910-01-272-1352
NSN 5999-01-496-3479
NSN 5930-01-303-6170
NSN 5965-01-169-1194
NSN 5905-01-197-1654
NSN 5950-01-437-8873
NSN 5965-01-190-7391
NSN 6110-01-046-0120