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 6610-01-157-0426
NSN 5905-01-459-4580
NSN 6135-00-010-5275
NSN 5996-00-210-8409
NSN 5996-01-068-0329
NSN 5998-01-328-9343
NSN 6645-01-473-3752
NSN 5975-01-495-2529
NSN 6685-01-146-0166
NSN 2925-00-008-5485
NSN 6620-00-701-1283
NSN 5855-01-433-2220