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 5910-01-356-6474
NSN 7035-01-594-3986
NSN 6145-00-228-0742
NSN 6610-00-382-0266
NSN 5985-01-160-9461
NSN 6105-01-519-0394
NSN 5998-00-763-7548
NSN 5920-00-238-6491
NSN 5950-01-540-7949
NSN 6320-01-021-6633
NSN 5835-01-229-6964
NSN 6240-01-115-8487