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 6610-01-238-8712
NSN 6130-01-353-7784
NSN 6105-01-121-3282
NSN 6645-00-824-6407
NSN 6220-00-276-8681
NSN 6135-01-563-4445
NSN 5945-01-101-9685
NSN 6620-01-493-2312
NSN 5998-00-841-2147
NSN 5895-00-850-2368
NSN 5998-01-312-6294
NSN 6145-00-466-4068