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 5998-01-575-8834
NSN 4140-00-883-1115
NSN 6145-00-372-3713
NSN 5925-01-202-8352
NSN 6150-01-600-2320
NSN 5975-01-006-6037
NSN 5895-00-925-8642
NSN 5996-01-258-8873
NSN 2925-01-398-6751
NSN 5975-01-304-2050
NSN 5920-01-168-7810
NSN 4140-01-352-0568