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 5905-01-403-2806
NSN 4140-01-451-4657
NSN 5965-00-296-9994
NSN 5990-00-583-9920
NSN 5999-01-450-5717
NSN 5990-01-439-4643
NSN 6145-00-779-6466
NSN 5855-00-951-6483
NSN 5999-01-352-5435
NSN 5835-01-384-3206
NSN 6240-01-359-9807
NSN 5855-01-492-6913