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 6685-01-046-2803
NSN 6685-01-215-1204
NSN 5945-01-177-9653
NSN 5835-01-254-8584
NSN 5915-00-453-6724
NSN 5975-00-966-7105
NSN 6145-00-135-1436
NSN 6645-01-007-5295
NSN 7035-01-189-1549
NSN 6145-00-840-6685
NSN 6105-00-754-8146
NSN 5975-00-244-9426