Item has 12 holes drilled through and equally spaced. 3 are equally spaced from each other (every 4th hole) and 8-32 unc 2b. The other 9 are 0.1360 thru.
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.
NSN 6105-01-230-2010
NSN 2925-00-906-0421
NSN 5930-00-161-3183
NSN 5985-00-226-3402
NSN 6610-01-194-8659
NSN 6135-01-067-8331
NSN 6150-01-400-4211
NSN 5990-00-145-1187
NSN 5990-01-183-6478
NSN 6105-00-108-1648
NSN 6645-01-535-0719
NSN 5999-00-647-4999