Existing Ball Lock® Shanks can be converted to Ball Lock® Fast Acting Shanks by substituting the proper Jergens Thumbscrew for the original set screw.
- Thumb Screw: Fast acting thumb screws 2 1/2 turns. No tools needed.
Specifications:
- Material: 4340 Steel
- Finish: Black Oxide
- Heat Treat: 40-45 RC
- Operating Temperature Range: -20°F to 400°F (-30°C to 200°C)