Five Piece M8x40mm Star Hand Knob Replacement Set For Machine Tools And Umbrella Bases Plastic Head With Galvanized Steel Thread Easy Hand Tightening And Secure Clamping For Quick Tool Adjustments

M8x40mm Hand Knob Screw Replacement Pack of 5
✔️ M8x40mm thread, 5-pack, plastic head, galvanized stud

These replacement hand knob screws are designed for quick, tool-free tightening on machines, fixtures, and umbrella bases. The M8 thread fits a wide range of equipment, including linear slide unit setups, offering reliable clamping power with a smooth, durable finish.

✅ Thread diameter M8 and length 40mm; head size 38x38x20mm
✅ Plastic knob head, galvanized steel stud for long life (not a sealed ball bearing)
✅ Pack of 5 pieces for easy replacements across multiple setups
✅ Easy hand-tighten design; no tools required for install

💡 What is a hand knob with M8 thread used for in equipment and how does it help with quick adjustments? This handy piece lets you clamp, adjust, and replace parts fast.
- It accepts tool-free tightening for fast setup
- Works with standard M8 holes and fixtures
- Provides strong, repeatable clamping for tools and bases
- Ideal for machinery, furniture, and outdoor stands