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 6105-01-152-4572
NSN 5935-01-550-4496
NSN 5925-01-106-6726
NSN 6110-01-555-0203
NSN 6145-01-265-3807
NSN 2925-00-980-0231
NSN 5930-00-105-2097
NSN 5985-00-807-5215
NSN 6220-00-411-9957
NSN 5905-01-211-6643
NSN 5855-01-122-9418
NSN 6150-00-192-2734