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 6610-01-235-5566
NSN 6645-01-182-2102
NSN 6220-01-585-4698
NSN 5975-01-195-3781
NSN 6150-01-156-8264
NSN 5935-01-323-8385
NSN 5999-01-445-6320
NSN 6610-00-862-8540
NSN 6150-01-463-2911
NSN 5930-00-523-1927
NSN 5985-01-381-3835
NSN 6110-00-111-2761