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 6685-01-640-7876
NSN 6135-01-386-5709
NSN 5975-00-061-7035
NSN 6645-00-585-3809
NSN 5935-01-599-9958
NSN 5975-00-006-5248
NSN 5985-00-849-0055
NSN 6645-00-958-5299
NSN 6135-01-535-9092
NSN 5910-01-474-6965
NSN 5905-00-539-3982
NSN 5985-01-502-6097