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 5999-01-170-8151
NSN 5835-01-281-1655
NSN 2925-00-878-2196
NSN 6145-01-060-7863
NSN 5920-00-970-8419
NSN 2925-00-139-0720
NSN 7035-01-011-3760
NSN 5975-01-198-4196
NSN 6620-00-928-0227
NSN 5895-00-265-6229
NSN 6220-01-417-5493
NSN 6220-00-166-9795