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).
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Dept. of the Navy 
Canada 
Germany 
Republic of Korea 
Italy 
Norway Classification: Copper screws, nuts, bolts, rivets, and other fasteners not threaded
NSN 5965-01-530-9910
NSN 5990-01-359-7150
NSN 6320-01-549-3153
NSN 5960-01-444-2205
NSN 2925-01-090-2391
NSN 5905-00-335-9727
NSN 5925-01-248-4510
NSN 6240-00-194-5999
NSN 6105-01-188-7292
NSN 6650-00-760-1385
NSN 6220-01-284-0016
NSN 5895-01-444-1387