Underwater life support iaw navsea instruction 10560.2b
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).
Classification: Other articles of iron or steel not wire nesoi
NSN 5965-01-495-8146
NSN 5998-00-242-5093
NSN 5975-01-125-1214
NSN 5965-01-524-8347
NSN 7035-01-045-7202
NSN 6150-01-376-3048
NSN 6150-01-386-1831
NSN 5990-01-575-3275
NSN 6240-00-071-1280
NSN 5950-00-924-8805
NSN 5930-01-024-1922
NSN 5990-01-032-5160