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 6220-00-334-7008
NSN 5905-01-306-3858
NSN 6105-00-921-5194
NSN 6650-01-385-9447
NSN 7035-01-074-7634
NSN 2925-00-845-1480
NSN 7035-00-731-8729
NSN 6645-01-099-6887
NSN 6135-00-519-1325
NSN 5999-01-461-2948
NSN 5895-01-057-3968
NSN 5910-01-132-9116