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 2925-00-275-1807
NSN 6220-00-660-5539
NSN 5998-01-606-3771
NSN 5920-00-555-1877
NSN 5925-01-442-0390
NSN 5985-01-426-7399
NSN 5835-00-632-8621
NSN 2925-00-474-4990
NSN 7035-00-572-7086
NSN 5855-01-224-7975
NSN 4140-01-605-5652
NSN 6240-01-160-8499