With split and keyway
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 5965-00-590-7995
NSN 6650-01-249-3201
NSN 5950-01-359-8952
NSN 5835-01-568-7796
NSN 6240-00-539-9770
NSN 6620-01-502-9104
NSN 7035-01-145-5059
NSN 6110-01-098-5071
NSN 6645-00-646-6631
NSN 5990-01-630-5094
NSN 5975-00-011-3714
NSN 5855-00-791-5000