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 6220-01-122-8012
NSN 5915-00-557-8178
NSN 5945-01-605-0725
NSN 7035-00-834-2090
NSN 6105-01-510-4359
NSN 5935-00-632-7908
NSN 5895-00-131-0203
NSN 5925-01-387-5879
NSN 5975-01-215-1205
NSN 5999-01-107-8379
NSN 6145-01-147-4968
NSN 5920-01-442-8998