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 6110-00-269-2696
NSN 5910-01-506-7634
NSN 6645-00-007-5305
NSN 5925-01-655-3808
NSN 5965-01-562-0811
NSN 6240-00-900-7674
NSN 5920-01-327-2574
NSN 5915-00-054-6637
NSN 6110-01-128-5018
NSN 5996-01-633-0192
NSN 5920-01-210-2300
NSN 6145-01-264-7232