1/2-20
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).
NSN 6135-01-180-9611
NSN 5915-01-098-0007
NSN 5910-01-346-3780
NSN 5925-01-486-9990
NSN 6135-01-508-6083
NSN 6135-01-180-9611
NSN 6620-00-286-5721
NSN 6220-00-660-5539
NSN 6610-01-590-7222
NSN 5935-00-372-5261
NSN 5975-01-111-3623
NSN 5985-01-306-9796