Star Clamping Knobs M8 Thread 21mm Stud 30mm Head Black Plastic Thumb Screw Hand Grips For Lathe Machinery Secure Quick Adjust 1 Piece Non Slip Grip Design For Easy Install And Maximum Torque

M8 star clamping knob with 21mm stud, 30mm head - Black
✔️ M8 thread, 21mm stud, 30mm star head, 45mm length, 1 pc < p>These star clamping knobs are designed for secure grip and quick adjustment on machinery and fixtures found in workshops and factories, including lathes, drill presses, milling machines, packaging lines, and woodworking setups.

✅ M8 male thread, 1.25 mm pitch; 21 mm threaded stud (0.83")
✅ Star head diameter 30 mm (1.18"); total length 45 mm (1.77")
✅ Zinc plated carbon steel bolt with thermoset plastic knob
✅ Ergonomic star-shaped grip, non-slip for gloves or greasy hands
✅ 1 Piece per pack, suitable for various fixtures

💡 What is an M8 star clamping knob used for in metalworking machines?

These handy clamps let you adjust and secure components quickly without tools.

- handy for quick setup on lathes, milling machines, drills, and packaging lines - improves positioning accuracy and repeatability in fixtures - durable construction with zinc plating and thermoset plastic knob - compatible with M8 threaded posts and 21 mm studs for many fixtures ✝️