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 2925-01-456-6840
NSN 6610-01-281-6036
NSN 7035-01-398-3494
NSN 6645-01-234-0222
NSN 5990-01-357-6175
NSN 6130-01-158-9437
NSN 5950-01-112-8447
NSN 6135-01-478-5598
NSN 5960-00-543-1956
NSN 6620-01-483-1138
NSN 4140-00-023-2597
NSN 6150-00-990-8220