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 5895-00-250-2022
NSN 4140-01-076-9775
NSN 5985-01-307-7611
NSN 5990-01-352-5255
NSN 5945-00-759-1580
NSN 4140-01-243-0608
NSN 5920-01-518-7963
NSN 5950-00-151-4620
NSN 5855-00-466-2309
NSN 5910-01-448-2709
NSN 5960-01-558-7787
NSN 5965-01-562-4667