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 6685-00-472-1233
NSN 6110-00-840-6560
NSN 6240-01-275-9719
NSN 5925-00-401-2739
NSN 6110-00-491-5788
NSN 5960-01-166-4021
NSN 6220-01-417-7514
NSN 6620-01-131-9620
NSN 7035-00-557-5570
NSN 6145-01-292-3940
NSN 5999-00-079-9767
NSN 5915-01-359-3305