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 6110-00-239-9248
NSN 6685-00-105-1425
NSN 6610-01-441-8364
NSN 5960-01-177-0338
NSN 6610-01-187-1748
NSN 6320-01-415-0953
NSN 6645-00-574-9712
NSN 5855-00-821-7512
NSN 6685-01-519-4288
NSN 5925-01-556-9643
NSN 5945-01-332-4585
NSN 5895-01-336-2885