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 5920-01-086-3258
NSN 6620-00-466-2314
NSN 7035-01-509-1959
NSN 5975-00-233-6301
NSN 5975-01-421-3521
NSN 5960-00-912-9285
NSN 6110-01-608-4799
NSN 6110-01-267-1537
NSN 6135-01-142-2417
NSN 5895-01-644-4331
NSN 5925-00-112-3460
NSN 5835-01-076-4091