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 5965-00-439-6287
NSN 2925-01-569-5471
NSN 5935-00-795-4250
NSN 5990-00-013-6862
NSN 6650-00-948-3647
NSN 5965-01-216-1994
NSN 5895-01-159-3192
NSN 6110-01-527-4932
NSN 5950-00-888-3731
NSN 5996-00-810-9486
NSN 6685-01-171-2000
NSN 5915-01-114-7249