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 5925-01-392-1886
NSN 5910-01-602-9296
NSN 6645-00-160-0503
NSN 6320-01-097-5347
NSN 6135-01-521-0378
NSN 4140-01-110-1980
NSN 5950-01-167-0084
NSN 6145-01-370-4485
NSN 5935-00-168-4499
NSN 2925-01-399-2765
NSN 6135-01-202-8113
NSN 5895-01-057-6356