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 5835-01-138-8622
NSN 5965-01-265-2980
NSN 5965-00-892-3850
NSN 5835-01-027-0597
NSN 5835-01-376-8454
NSN 5915-00-894-3825
NSN 5985-01-427-3734
NSN 6240-00-940-8294
NSN 5925-01-389-9341
NSN 5990-00-242-3754
NSN 6105-01-464-4684
NSN 5935-00-054-2508