Feature

●Thickness = 4mm x Length = 20mm
●Thread part = Coarse [Pitch: Approx. 0.03 inch (0.7 mm)]
●Note on product images) This is a representative size image. Length of each part such as engraving, thread portion, pitch, etc. varies by size
●Note: Please be sure to check the drawing for the size and other items

[M4×20]

Description

■ Head Shape: Butterfly bolt (2 types)
The head shape is like a swirl of hinges and has a corner handle for the most popular shape.
No tools required to tighten and tighten by hand.

■ Thread Shape: Coarse
It is the most standard pitch in Japan as prescribed by ISO (International Organization for Standardization) standard. The most frequent distribution in Japan.

■Material: Iron
"Iron" is "steel" and is an alloy of iron containing carbon.
Although it is commonly used in many circulations, it is cheap materials, but due to the downside of it is easy to rust, many surface treatments will reduce corrosion.

■Surface treatment: Brown bronze (GB)
G stands for German and B stands for bronze or brown and some theories describe the color of the German tank. GB plating is applied to the base of the copper plating and then colored and polished with special chemicals.
Color is "Bronze Color".