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 6145-01-243-0123
NSN 6650-01-468-9093
NSN 6240-01-449-1387
NSN 5996-00-926-7806
NSN 5935-00-840-6436
NSN 6220-01-302-5249
NSN 6150-01-384-3660
NSN 5965-01-112-5518
NSN 5835-01-647-6426
NSN 5975-01-356-2268
NSN 6685-00-007-1404
NSN 5930-01-007-7314