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 5990-00-566-5987
NSN 5920-00-607-3385
NSN 5930-01-176-6498
NSN 5950-01-339-4636
NSN 6130-01-235-6049
NSN 5965-01-539-2122
NSN 5930-00-433-7479
NSN 5930-01-392-0608
NSN 5925-01-312-3551
NSN 6105-00-456-1433
NSN 6145-01-364-0346
NSN 5960-00-829-6227