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 5990-01-365-6016
NSN 5910-00-971-1710
NSN 5950-00-079-1530
NSN 6620-00-083-3731
NSN 5855-01-610-3506
NSN 5965-01-600-0566
NSN 6610-01-267-5382
NSN 5996-00-676-2674
NSN 6610-01-368-3269
NSN 5895-00-772-5947
NSN 6150-01-219-2867
NSN 5920-01-396-6159