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 5999-01-227-2107
NSN 5960-01-437-5318
NSN 2925-00-924-1159
NSN 5945-00-905-5749
NSN 6105-01-310-9799
NSN 6130-00-068-4023
NSN 7035-01-282-7124
NSN 5945-01-256-0295
NSN 6685-01-620-4987
NSN 5965-00-351-7460
NSN 5920-01-529-7697
NSN 6320-01-631-7828