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 6685-00-105-1425
NSN 5920-00-889-6064
NSN 6135-00-874-6566
NSN 6645-01-303-8336
NSN 6150-01-020-7881
NSN 6610-01-304-3226
NSN 5990-00-499-9816
NSN 5910-00-876-6575
NSN 5960-01-328-8248
NSN 6130-01-109-3050
NSN 6320-01-125-3361
NSN 5975-01-085-5824