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 5895-00-394-6875
NSN 5935-00-904-1104
NSN 5835-01-116-2369
NSN 6130-00-293-4714
NSN 5998-01-361-4652
NSN 6110-01-312-7479
NSN 5905-01-655-1335
NSN 5935-00-425-4383
NSN 6130-01-044-5436
NSN 5935-00-204-7454
NSN 6610-00-664-2190
NSN 6650-00-446-8787