A round or oval part and either a d-shaped or a heart-shaped part mounted on a common axis so as to permit relative rotation between the parts.
NSN 6145-01-101-2063
NSN 7035-00-020-2227
NSN 5910-01-624-2824
NSN 6320-01-370-5222
NSN 5985-00-369-3585
NSN 4140-01-421-4045
NSN 6145-00-370-1964
NSN 5855-01-634-0259
NSN 6130-00-924-9096
NSN 2925-01-432-8452
NSN 7035-00-919-3381
NSN 5998-01-317-2844