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 5835-00-984-1233
NSN 5920-01-093-3022
NSN 6645-01-633-1852
NSN 6135-01-324-7718
NSN 4140-01-579-3421
NSN 6150-01-534-3668
NSN 6610-00-121-4683
NSN 5895-01-021-3598
NSN 5855-01-261-5495
NSN 6645-01-275-1372
NSN 4140-00-128-8072
NSN 5905-01-510-9397