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 5950-00-467-0075
NSN 5895-00-071-3994
NSN 6610-01-441-1581
NSN 6645-00-313-2324
NSN 5910-01-466-1568
NSN 6135-01-650-4313
NSN 6220-01-593-7209
NSN 5915-01-648-7354
NSN 5835-01-203-8295
NSN 5990-01-173-7238
NSN 6645-01-512-2260
NSN 5905-01-449-5307