60 degrees countersink located on flange end inside dia
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 6240-01-246-4258
NSN 5835-01-370-8912
NSN 5965-00-110-3330
NSN 6110-01-184-0736
NSN 5960-00-215-5884
NSN 6220-00-205-2040
NSN 4140-00-399-5994
NSN 5960-01-216-7004
NSN 5895-01-386-5694
NSN 4140-00-296-9695
NSN 6620-01-431-9176
NSN 5960-01-578-5537