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 6645-01-483-5519
NSN 6105-01-155-4996
NSN 5935-00-177-7950
NSN 6135-00-182-7008
NSN 6685-00-403-7642
NSN 6620-01-262-9489
NSN 5975-00-183-7693
NSN 5965-01-227-4517
NSN 5990-01-485-0260
NSN 5915-01-054-6828
NSN 5925-00-905-5135
NSN 5965-00-168-3608