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 6685-01-384-3143
NSN 5920-01-235-9522
NSN 6645-01-244-4881
NSN 6145-00-635-9412
NSN 5950-01-240-0444
NSN 5925-01-183-4919
NSN 6240-01-577-3501
NSN 6150-01-155-9130
NSN 6145-01-384-2983
NSN 5925-01-428-9978
NSN 5920-00-966-9392
NSN 5895-01-412-3844