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 5965-01-083-8006
NSN 5905-00-644-9983
NSN 7035-01-106-3476
NSN 5985-00-405-5626
NSN 5990-01-268-2236
NSN 6110-01-593-2719
NSN 6220-00-892-7755
NSN 2925-00-290-7052
NSN 5895-01-531-8655
NSN 6645-00-715-1531
NSN 6650-01-411-6292
NSN 5945-00-935-5266