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 6320-01-600-0787
NSN 5835-01-219-0586
NSN 6110-01-536-4806
NSN 5965-00-501-4867
NSN 5925-01-539-6974
NSN 5998-00-180-8262
NSN 6650-00-499-7446
NSN 5945-01-469-6287
NSN 6610-00-161-0680
NSN 6610-01-224-7247
NSN 5985-01-203-3419
NSN 5910-01-088-0284