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 5915-00-584-3512
NSN 5990-01-649-4647
NSN 6145-00-402-4650
NSN 2925-01-462-1620
NSN 5950-01-503-0747
NSN 5915-01-559-0396
NSN 6220-00-217-7054
NSN 6105-00-564-8798
NSN 6135-01-540-3385
NSN 5895-00-035-8813
NSN 5855-01-464-3152
NSN 6620-01-288-2627