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 6110-01-595-1149
NSN 6110-01-450-1206
NSN 6130-01-650-6843
NSN 5996-00-707-6228
NSN 6240-00-421-1862
NSN 6220-01-037-0383
NSN 5985-00-734-7479
NSN 6620-00-439-2442
NSN 5895-00-172-2256
NSN 6145-01-432-2440
NSN 6645-00-192-1152
NSN 6645-00-191-4978