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Material: Made of 304 Stainless Steel, this thumb screw Knob has corrosion resistance, rust resistance, good wear resistance, well fastening function and long-lasting service.
Thread Size: Thread Diameter: M4, Thread Pitch: 0.7mm / 0.03inch, Rod Length: 20mm / 0.79inch, Screw Head: Head Style: Flat Straight Line Knurled Head, Head Diameter: 8mm / 0.31inch, Head Thickness: 6mm / 0.24inch. The larger the diameter of the thumb portion, the greater the clamping force that can be applied.
Applications: Applied in home appliances, communications industry, automotive industry, etc. Widely used in the installation, maintenance, and fixing of various daily needs: such as light covers, musical instruments, mechanical assemblies, electronic equipment, communication equipment, ornamental products, and so on.
Easy to Use: No tools are required. Knurled head thumb screws provide a solid grip and smooth surface, making it easier to tighten or loosen the fastener by hand.
Clear and Sharp Threads: The screw thread of the thumb screw is clear, the force is evenly rotated, and it is not easy to slip, and the fixing and adhesion effect is good. Tightly molded metal screws ensure optimum durability and functionality.

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Specification:
Material: 304 Stainless Steel
Head Style: Flat Straight Line Knurled Head
Thread Style: Fully Thread
Thread Diameter: M4
Thread Pitch: 0.7mm / 0.03inch
Rod Length: 20mm / 0.79inch
Head Diameter: 8mm / 0.31inch
Head Thickness: 6mm / 0.24inch

Description:
1. The thumb screw Knob has corrosion resistance, rust resistance, good wear resistance, well fastening function and long-lasting service.
2. The screw thread of the thumb screw is clear, the force is evenly rotated, and it is not easy to slip, and the fixing and adhesion effect is good. Tightly molded metal screws ensure optimum durability and functionality.
3. Thumb screws with knurled heads provide extra grip for hand tightening. The wavy edge is designed to be tightened and loosened by hand, making it easier to actuate by hand and can be installed without tools.
4. Hand-made thumbscrews are suitable for mechanical equipment, tools, automobiles, instrumentation, industrial equipment, household appliances, furniture manufacturing, communications industry and testing equipment, where screws need to be loosened frequently.

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