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 6650-01-290-4001
NSN 5960-00-376-5514
NSN 5925-00-280-2273
NSN 6685-00-334-6583
NSN 5960-00-914-3186
NSN 6610-00-172-7658
NSN 5905-01-204-4676
NSN 6620-00-229-2728
NSN 2925-00-144-6405
NSN 6105-01-659-4483
NSN 5998-01-429-9430
NSN 6645-00-801-8237