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 6620-01-057-2580
NSN 5855-01-156-0417
NSN 5998-00-127-0910
NSN 5925-01-429-0162
NSN 6650-01-466-5997
NSN 6220-01-159-6204
NSN 5905-00-337-0447
NSN 6110-01-044-0230
NSN 5950-01-034-8476
NSN 6650-01-450-0790
NSN 5945-00-710-9409
NSN 5935-00-554-0244