Specifications:
Screw Size: M4 (0.03 inch (0.7 mm) pitch)
Screw length: 0.47 in (12 mm)
Round Head Diameter: 0.51 inches (13 mm)
Total length: 0.71 in (18 mm)
Material: Carbon steel, plastic
Finish: Zinc Plated
Color: Black.
Package included: 20 pcs x Knobs with Null
Description: The studs with galvanized carbon steel threads on the knobs ensure durability, strength, functionality and abrasion resistance. Solid metal threaded studs ensure a secure connection of parts and are easy to install and suitable for a variety of applications.
The textured texture on the surface provides a better grip and makes it easier to tighten and loosen the knob. Threads are neat, the force is even, deep, skidproof, and burr-free.
A safe and secure thumb screw is ideal for adjusting and tightening control. Premium plastic clamping knobs provide a smooth, beautiful surface and comfortable grip.
Knurled knobs with hand bolts are commonly used in applications where frequent adjustments and tightening are required. Widely used in lathe, drill press, cutting machines, packaging and woodworking machinery, printing, instrument and industrial equipment, and fixtures etc.
Be sure to tighten the knobs tightly to avoid movement of the fixed assembly. Please note that excessive tightening of knobs may damage or peel threads in the joining assembly. Replace knobs as needed.