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 2925-01-633-4048
NSN 6685-01-089-9606
NSN 5965-00-147-3070
NSN 6220-00-429-6652
NSN 6110-01-375-9341
NSN 5985-01-233-3981
NSN 5990-01-421-5342
NSN 2925-01-486-7277
NSN 5915-01-283-5350
NSN 6220-01-315-1458
NSN 5915-00-402-8186
NSN 5960-00-240-2001