Notched with hole in center
NSN 5915-01-382-0517
NSN 5935-01-335-9651
NSN 6220-01-242-9901
NSN 6130-00-949-6466
NSN 5925-01-285-4704
NSN 5855-01-486-6393
NSN 7035-01-158-7673
NSN 6145-00-366-5790
NSN 6130-00-424-7085
NSN 5996-01-057-1981
NSN 6610-00-947-7595
NSN 5965-01-186-0329