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 5855-01-429-8702
NSN 5835-01-592-2350
NSN 5915-01-219-1327
NSN 5960-01-531-9108
NSN 5998-00-476-2352
NSN 5920-01-492-3545
NSN 7035-01-406-5232
NSN 6240-01-229-5712
NSN 6620-01-462-5196
NSN 6145-01-476-5451
NSN 5990-01-014-1280
NSN 5935-00-074-9181