These knurled thumb screws are good replacements on repairing retro lamps, furniture, machines, household appliances, electronic equipment and so on.

Specification:
Color: Brass Tone
Material: Brass
Thread: M4x9.5mm (Thread Size*Thread Part Length)
Thread Pitch: 0.7
Total Size: 10x12mm / 0.39x0.47 inch (D*H)
Packing List: 5 Pack x Knurled Thumb Screws

Advantage:
These brass thumb screw knobs have quite good corrosion resistance, and they have a professional appearance. Not easy to deform and is durable to use. The knurled head design can help you grip the screws easier, so you can tighten or loosen it with the bare hand, no tools required.

Instruction:
Grip the knurled head and rotate the screws, good lighting accessories for fastening.

NOTE: Please confirm the thread size.