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 6220-01-199-4842
NSN 2925-00-814-8745
NSN 5950-01-481-3116
NSN 5935-00-952-0603
NSN 6110-00-851-3044
NSN 6145-01-535-6035
NSN 6220-00-118-2789
NSN 7035-00-574-4223
NSN 5910-01-401-5279
NSN 6145-01-181-9376
NSN 5935-01-085-4560
NSN 5998-01-295-2757