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 6610-01-611-8787
NSN 6220-01-627-7940
NSN 6645-01-010-3746
NSN 6110-01-122-5916
NSN 6150-00-238-1352
NSN 5998-00-008-4655
NSN 6620-01-604-4072
NSN 6220-01-135-3841
NSN 6240-01-576-3307
NSN 5935-00-955-6800
NSN 6650-00-840-9758
NSN 6320-01-134-7267