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 6685-00-490-3130
NSN 6610-01-429-2162
NSN 5910-01-433-3054
NSN 5950-00-868-5112
NSN 5999-01-200-4786
NSN 6685-01-193-6586
NSN 5910-00-203-2119
NSN 6145-00-088-3766
NSN 5965-01-295-4426
NSN 5925-01-291-9393
NSN 6135-00-087-0333
NSN 5835-01-373-3498