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 4140-01-139-6192
NSN 5930-00-613-5534
NSN 5855-00-237-4088
NSN 2925-01-079-6229
NSN 5905-01-179-7138
NSN 6145-00-222-1356
NSN 5925-00-250-4372
NSN 5950-00-674-0198
NSN 5945-01-067-7955
NSN 5925-01-098-9981
NSN 5998-01-214-8685
NSN 5945-00-523-5723