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 5999-01-555-8038
NSN 5965-00-227-7348
NSN 5855-01-266-1645
NSN 5950-00-812-7379
NSN 5910-01-590-1695
NSN 5925-00-060-6732
NSN 5930-01-197-7372
NSN 5945-00-255-7191
NSN 2925-00-328-2018
NSN 6645-01-369-2478
NSN 5915-01-167-8506
NSN 6240-00-422-1278