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 5960-00-422-3197
NSN 6620-00-491-3818
NSN 5985-01-136-1562
NSN 6105-01-273-0596
NSN 5985-01-008-2051
NSN 2925-00-179-7143
NSN 6220-01-090-6443
NSN 6685-01-462-9114
NSN 5975-00-485-3150
NSN 7035-01-535-1450
NSN 6645-00-542-1206
NSN 5965-01-262-3513