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 6685-01-270-9335
NSN 5990-00-917-4220
NSN 5915-01-529-7351
NSN 6645-01-545-2954
NSN 5998-01-475-5603
NSN 6220-00-342-1086
NSN 5920-00-102-3792
NSN 5930-00-862-3515
NSN 5960-01-265-0354
NSN 5960-00-204-7506
NSN 6645-01-499-6119
NSN 6320-00-593-0379