Cage 4s077 state they are the oem
No other part numbers with same form, fit, and function found.
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 5925-00-142-0752
NSN 6135-01-416-8342
NSN 5895-01-634-0630
NSN 6135-01-230-4399
NSN 5990-01-083-0595
NSN 2925-01-004-5627
NSN 6110-01-235-3796
NSN 2925-01-182-0227
NSN 6620-01-587-5972
NSN 5905-01-205-1501
NSN 5998-00-021-7195
NSN 5990-01-498-0641