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 6645-01-190-0085
NSN 5990-01-234-8646
NSN 6240-00-151-7642
NSN 5935-01-227-5631
NSN 5990-00-011-2994
NSN 5905-01-310-9217
NSN 5950-01-443-8377
NSN 5925-01-393-7341
NSN 7035-00-193-2269
NSN 5999-01-341-1636
NSN 6145-01-356-6379
NSN 6610-00-500-6944