A trunicated cone-shaped metal item generally tapered along its entire peripheral length, with a centrally located hole. It may be split (cut) through the material parallel to the axis.
NSN 7035-01-271-1643
NSN 5920-00-493-8307
NSN 5895-01-026-1994
NSN 5930-00-351-5455
NSN 6620-01-441-0240
NSN 7035-00-153-3826
NSN 5935-00-445-9045
NSN 5990-01-017-5117
NSN 5905-00-432-0974
NSN 6645-01-076-4655
NSN 6135-01-180-4588
NSN 4140-01-399-0330