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 4140-01-099-9675
NSN 5915-01-602-9324
NSN 5915-01-541-2031
NSN 5930-01-490-6723
NSN 5990-00-738-5603
NSN 6610-00-361-6954
NSN 7035-01-641-2830
NSN 5965-00-985-4152
NSN 6150-01-551-1942
NSN 6135-01-521-0378
NSN 5905-01-033-3904
NSN 7035-01-332-9582