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 6650-00-056-1581
NSN 5999-01-615-5103
NSN 6320-01-054-3046
NSN 5999-01-522-7843
NSN 5930-00-276-9289
NSN 5855-01-122-3125
NSN 5996-01-464-1209
NSN 5945-00-285-3409
NSN 6620-01-337-9070
NSN 2925-01-201-3043
NSN 5930-01-390-6329
NSN 6240-01-420-9255