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 5990-00-936-3947
NSN 6685-00-534-1525
NSN 6240-00-076-2752
NSN 6150-01-370-2249
NSN 6145-01-010-4665
NSN 5930-01-088-3083
NSN 6150-01-097-3740
NSN 6620-01-605-9660
NSN 6645-01-524-7027
NSN 2925-00-714-3932
NSN 5945-00-021-2048
NSN 4140-01-089-9724