M4 x 6mm Knurled Thumb Screw Clamping Knobs With Plastic Hand Grip Black, Knurled Hand Knobs On Threaded Studs For Durable DIY Machines And Workbenches, Pack Of 20, Zinc Plated Steel, Easy Grip

Durable M4 x 6mm Knurled Thumb Screws for 20-Pack Fixtures
✔️ M4 x 0.7 pitch, 6mm (0.24") thread, 13mm (0.51") head, 12mm (0.47") overall

These knurled thumb screws are compact clamping knobs with zinc-plated threaded studs, designed for quick hand-tightened adjustments on machines and workbenches. They’re ideal for DIY fixtures, jigs, and adjustable setups.

✅ Thread size: M4, 0.7mm pitch
✅ Thread length: 6mm
✅ Head diameter: 13mm
✅ Total length: 12mm
✅ Material: zinc-plated carbon steel

💡 What is a hand knob screw used for in diy machine setups? These handy parts are built for quick manual adjustments on equipment, fixtures, and workbenches.
- Tool-free tightening for frequent changes
- Fits standard M4 threaded studs on many machines
- Knurled surface improves grip with gloves
- Zinc plating adds corrosion resistance for workshop use

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