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 6130-01-385-8349
NSN 6645-00-784-8288
NSN 6620-01-191-5046
NSN 5925-01-246-3703
NSN 5965-00-246-5612
NSN 6610-01-391-5092
NSN 7035-01-515-3490
NSN 5905-01-271-4184
NSN 6240-01-166-4517
NSN 5905-01-411-8063
NSN 5965-01-441-1525
NSN 6650-00-167-7972