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 5996-01-386-9576
NSN 4140-01-274-0423
NSN 6240-01-381-1072
NSN 4140-01-197-0406
NSN 2925-00-831-7024
NSN 5910-01-648-2045
NSN 6105-01-650-8083
NSN 6150-01-381-3638
NSN 6220-01-461-0304
NSN 6650-01-358-9800
NSN 5930-01-170-5033
NSN 6685-01-559-6725