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 2925-01-182-9924
NSN 6240-00-780-5356
NSN 5930-01-370-4452
NSN 6145-01-602-1154
NSN 6685-00-337-5529
NSN 6685-00-984-6096
NSN 5915-00-528-1192
NSN 6650-01-604-9073
NSN 5905-00-989-2838
NSN 4140-01-441-7479
NSN 6620-00-832-2556
NSN 5905-01-095-6201