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 5998-00-828-4059
NSN 5996-01-281-2396
NSN 5915-01-338-9477
NSN 5996-01-108-0565
NSN 5975-01-345-4177
NSN 5999-01-455-9402
NSN 5945-01-355-8533
NSN 6135-01-167-7604
NSN 6240-01-570-8070
NSN 5930-00-112-0897
NSN 6150-01-468-0143
NSN 6320-01-493-4472