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 6110-01-259-3421
NSN 6135-01-616-9489
NSN 5835-01-111-0969
NSN 6620-01-398-8986
NSN 6610-01-451-3877
NSN 5915-01-217-1394
NSN 6685-01-584-8871
NSN 5996-01-083-0642
NSN 5975-01-356-4544
NSN 5895-01-578-5301
NSN 7035-00-079-7189
NSN 7035-01-145-5059