[M8×50]

■ Shape: High nut
Higher hex nut Also known as "long nuts" and "spacer nuts. High nuts may have all threads (full threads) depending on the product, and there are only threads on both ends and no threads in the middle (both threads).
Use a tool such as a spanner or wrench to tighten it.

■ Thread Shape: Coarse [Full screw]
It is the most standard pitch in Japan as prescribed by ISO (International Organization for Standardization) standard. The most frequent distribution in Japan.
In addition, the "full screw" is the shape of all the threads from the tip of the high nut to the tip.

■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: Trivalent black
It has the same corrosion resistance as the "black chromate" and has the same possibility of self-healing.
Unlike hexavalent chrome, it is non-toxic and compliant with RoHS directive. Therefore, it is used as an alternative to black chromate.
Color is "Black".

Product Features:
The flat diameter of the high nut is the same as the flat diameter of the hex nut, but the tolerance is different.
Depending on the dimensions, there may be dimension not all screws (through tap), so please check with "drawing/standards".