A tubular shaped item with a round or hexagon peripheral shape having two flat bearing surfaces perpendicular to the axis of the centrally located hole. It is designed to maintain a predetermined distance between assembled parts. The item may be with or without flange(s) of any peripheral shape. The overall length must exceed 25 percent of the outside diameter or distance across peripheral flats of the body. (when the length, outside diameter, and/or distance across peripheral flats are designed as a tolerance, the maximum dimension will be used to determine compliance). For items having other than a round or hexagon peripheral shape, see spacer, plate. Excludes items with lubricating features, see bearing, sleeve and bushing, sleeve. See also bushing, tapered; spacer, ring; washer, flat; and washer, (as modified).
Dept. of the Navy 
Thailand 
Greece 
Turkey NSN 5965-01-079-7939
NSN 5990-01-288-7393
NSN 5930-01-257-5268
NSN 5855-01-474-6456
NSN 5996-00-225-3286
NSN 5996-01-473-2183
NSN 5910-00-218-1114
NSN 5996-01-127-5431
NSN 5915-01-574-6481
NSN 6240-01-306-8962
NSN 5990-01-153-0679
NSN 5935-01-248-1412