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 6110-01-481-4480
NSN 6110-01-594-8354
NSN 6130-01-406-4617
NSN 6685-01-413-9362
NSN 6145-01-555-1404
NSN 6610-01-065-1073
NSN 5996-01-290-4844
NSN 5998-01-609-1276
NSN 6220-01-027-3360
NSN 6620-01-034-1697
NSN 4140-01-488-1169
NSN 7035-01-107-2811