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 4140-00-205-6491
NSN 5945-00-215-0221
NSN 6320-00-459-8973
NSN 5960-01-340-9485
NSN 5945-00-988-0851
NSN 5895-00-246-4415
NSN 6105-01-190-5161
NSN 5990-01-382-3244
NSN 6135-01-415-4124
NSN 7035-00-973-9215
NSN 6105-01-493-8212
NSN 6130-01-242-1588