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 5998-00-050-2072
NSN 5895-00-406-7671
NSN 5930-01-463-6791
NSN 5855-01-464-3152
NSN 6650-00-997-4337
NSN 5975-01-231-9669
NSN 2925-00-051-1467
NSN 5935-00-284-8306
NSN 5895-01-232-4686
NSN 6645-00-155-2398
NSN 5999-01-441-3319
NSN 5855-00-252-5743