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 5998-01-649-7053
NSN 5998-00-299-7891
NSN 6610-00-367-9603
NSN 4140-00-844-9436
NSN 5910-01-621-8684
NSN 5945-00-900-7581
NSN 6135-01-036-0432
NSN 5996-00-625-5410
NSN 5999-00-082-4056
NSN 6105-01-287-8005
NSN 5925-01-261-4215
NSN 6610-01-633-2722