Classic, easy-to-grip cast iron clamping knob. F-prong design provides a firm grip for applications requiring quick tightening and high torque. Choice of five knob sizes, each available blank, tapped, tapped through, or reamed. Made in USA.
| Item | Material | Heat Treat | Finish | DFARS | RoHS |
| Hand Knobs (Cast Iron) | Zinc Plated Clear Chromate | - | - | โ | โ |

| D Diameter | A Diameter | B | C | H | E |
| 2-3/4 | 1-3/8 | 3/4 | 1/2 | 1-1/2 | - |