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 5920-01-063-8250
NSN 4140-00-078-5165
NSN 5998-01-230-0365
NSN 6220-00-915-6592
NSN 2925-00-004-1278
NSN 5975-00-468-6111
NSN 6650-00-139-5459
NSN 6320-01-219-5174
NSN 5998-01-386-3009
NSN 5835-01-111-0969
NSN 5985-00-153-0864
NSN 6145-00-296-0085