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 5998-00-813-2293
NSN 6645-01-585-2264
NSN 5960-00-003-7982
NSN 5950-01-591-8151
NSN 6150-01-614-8066
NSN 6650-01-382-8569
NSN 5910-01-432-0576
NSN 6110-01-099-6893
NSN 5930-01-393-8025
NSN 6110-01-268-7140
NSN 5960-00-592-4118
NSN 5999-01-237-4888