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 5920-01-322-8928
NSN 5925-01-391-7718
NSN 5960-00-455-9218
NSN 6645-01-103-8449
NSN 5895-01-194-8120
NSN 6150-00-248-2580
NSN 5960-00-297-7099
NSN 5998-00-909-1009
NSN 5930-00-209-1076
NSN 6685-01-304-8054
NSN 5975-01-150-1654
NSN 6320-01-239-2337