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 6145-01-099-8035
NSN 5855-00-908-6402
NSN 5945-00-897-4756
NSN 6135-01-321-5659
NSN 5925-01-602-7521
NSN 6150-01-547-5044
NSN 5999-00-008-0609
NSN 5999-01-449-1953
NSN 5985-00-821-5636
NSN 5975-01-525-8529
NSN 7035-01-603-4408
NSN 6145-01-522-5221