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 5965-01-437-7417
NSN 5999-01-504-0421
NSN 6685-01-544-5476
NSN 5930-01-314-0741
NSN 6130-01-281-6187
NSN 6135-01-653-6113
NSN 5960-00-647-9159
NSN 6645-00-629-9367
NSN 5905-01-131-5702
NSN 6650-01-094-9378
NSN 6145-01-475-7762
NSN 6145-00-635-9957