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 6320-01-033-6624
NSN 5996-01-561-4885
NSN 5985-01-477-9573
NSN 5945-00-392-6434
NSN 6145-01-483-5862
NSN 5999-01-076-4692
NSN 5835-01-581-9433
NSN 6645-01-076-4655
NSN 2925-00-524-4688
NSN 5910-00-740-7286
NSN 5965-01-430-4654
NSN 6135-01-187-0033