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 5996-00-844-6227
NSN 6150-01-256-8596
NSN 6130-01-485-1008
NSN 5925-01-172-9053
NSN 2925-01-166-4589
NSN 7035-01-203-8010
NSN 5998-01-361-8938
NSN 6685-01-395-8981
NSN 6220-00-060-8123
NSN 5920-00-947-7393
NSN 6645-01-166-1891
NSN 2925-00-728-4558