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 6645-01-089-6459
NSN 5945-01-653-4597
NSN 6685-01-291-1332
NSN 7035-01-382-4413
NSN 6610-01-123-2276
NSN 6240-00-578-7894
NSN 6110-00-037-8164
NSN 5935-01-070-9450
NSN 6320-01-158-0935
NSN 5975-00-064-1886
NSN 5960-01-391-8860
NSN 5999-00-484-2334