Lot 50 Push-On Steel External Retaining Rings, 5/16" Shaft Diameter, 5105-031 H
Thrust Load Capacity: 45 lbs. These are part number 5105-031 H. We found factory specs (below) for part number 5105-031, but nothing anywhere with the "H" suffix. Shaft Size (max.).313" / 7.94 MM.