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 6240-00-166-2271
NSN 6685-01-519-9250
NSN 5990-01-025-7466
NSN 5965-01-306-4484
NSN 5985-01-473-0053
NSN 6320-01-554-0901
NSN 5920-01-461-1767
NSN 5905-00-225-4307
NSN 5998-01-184-1854
NSN 6620-01-650-5226
NSN 6150-01-157-6319
NSN 6685-00-803-6421