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 5835-00-074-3700
NSN 6220-00-419-0635
NSN 6240-01-497-9574
NSN 5945-01-345-8421
NSN 7035-01-578-8186
NSN 2925-00-152-1825
NSN 6645-00-072-1909
NSN 5950-01-394-5352
NSN 6650-01-532-6966
NSN 5895-01-498-5176
NSN 5930-00-913-6507
NSN 5960-01-082-8571