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 5960-00-492-2502
NSN 5985-01-258-3226
NSN 6135-01-322-4655
NSN 5895-00-961-0031
NSN 5985-01-439-5022
NSN 5945-00-882-1317
NSN 5930-01-206-6310
NSN 5855-01-207-8691
NSN 5905-01-502-9372
NSN 6650-00-590-9073
NSN 5950-00-803-4484
NSN 6130-01-449-8205