Color yellow federal standard 595 no. 23538
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 5975-00-392-2890
NSN 6150-01-472-2546
NSN 5920-00-434-4230
NSN 6650-00-031-8467
NSN 5855-01-408-3154
NSN 5985-00-010-9362
NSN 5999-00-619-4566
NSN 5999-01-659-4697
NSN 5945-01-115-5171
NSN 6610-01-633-8931
NSN 6240-01-272-5893
NSN 2925-01-545-2717