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 6105-01-544-0297
NSN 5965-00-787-3028
NSN 5950-00-168-4094
NSN 5925-01-351-5542
NSN 5930-01-447-3500
NSN 5960-01-287-4187
NSN 6220-01-458-5669
NSN 5930-01-530-5026
NSN 2925-01-381-5307
NSN 6645-00-171-9639
NSN 5990-00-960-6310
NSN 6130-00-180-4786