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 6135-01-398-5922
NSN 2925-01-273-4898
NSN 5930-01-540-3370
NSN 6135-00-182-7008
NSN 2925-00-526-4541
NSN 5895-01-511-1430
NSN 6610-01-633-8931
NSN 5965-01-365-1678
NSN 6240-00-227-0135
NSN 5910-01-490-7723
NSN 5925-00-410-4822
NSN 5996-01-489-5494