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 7035-00-150-2379
NSN 5905-00-118-9865
NSN 6685-01-525-3300
NSN 6320-01-399-6177
NSN 5905-01-443-0925
NSN 6650-01-547-7277
NSN 2925-01-197-7864
NSN 5930-00-903-9890
NSN 6135-01-552-1568
NSN 6110-00-518-2998
NSN 6110-00-391-7000
NSN 6685-01-373-1292