Surface treatment is immunized
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 6645-01-229-9769
NSN 5960-01-263-6781
NSN 4140-00-198-4961
NSN 5920-01-519-8835
NSN 6145-00-257-1080
NSN 5965-00-959-4910
NSN 5935-00-336-5866
NSN 6620-01-207-0667
NSN 6135-01-151-2705
NSN 5985-00-625-5714
NSN 5990-01-250-4198
NSN 4140-00-947-3918