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 5925-01-113-7793
NSN 5930-01-492-6967
NSN 5925-01-630-2413
NSN 6650-00-067-3572
NSN 5950-00-428-3393
NSN 6685-00-958-9014
NSN 6645-00-166-7926
NSN 5910-01-122-4024
NSN 5996-00-222-6049
NSN 6240-01-551-7067
NSN 4140-00-927-7992
NSN 5975-00-851-6085