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 5975-00-774-8328
NSN 5990-01-037-1704
NSN 6220-01-650-4267
NSN 6110-01-554-5026
NSN 6240-01-010-2991
NSN 6145-00-964-8859
NSN 6145-01-517-6561
NSN 6650-00-095-6490
NSN 5905-00-150-5705
NSN 5930-00-490-8369
NSN 5975-01-497-0438
NSN 5935-01-432-1166