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 6320-01-220-2264
NSN 6130-00-165-1701
NSN 5999-01-237-2666
NSN 6220-00-917-0881
NSN 5905-01-578-3672
NSN 6240-00-455-7640
NSN 5915-00-402-6411
NSN 5935-00-184-0936
NSN 5930-01-442-4757
NSN 5945-01-046-2178
NSN 5920-01-181-5248
NSN 5905-01-526-3801