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 5835-01-229-6964
NSN 5895-00-444-0139
NSN 5895-01-044-3201
NSN 6685-00-759-2910
NSN 5925-00-473-2622
NSN 5855-00-256-5562
NSN 5935-00-071-3634
NSN 6650-01-100-0933
NSN 6620-00-269-5168
NSN 5910-01-118-4691
NSN 6620-00-163-8793
NSN 7035-00-337-8745