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 5895-01-294-7704
NSN 5985-01-328-0442
NSN 6135-00-474-1397
NSN 7035-00-523-7492
NSN 5945-01-137-1512
NSN 5920-01-236-6780
NSN 6620-00-516-3204
NSN 6240-01-194-2206
NSN 5950-01-520-3232
NSN 5910-00-482-0492
NSN 6685-01-544-9697
NSN 2925-00-288-1394