According to the common nut use, the surface treatment of the nut can be divided into several categories:

The first is the nut surface without any treatment, to maintain the most original state of the nut treatment.

Secondly, the nut is soaked in zinc solution, and the zinc layer is deposited on the surface of the nut through a series of chemical reactions to form a zinc coating and improve the corrosion resistance of the nut.

There is also our most common form a layer of oxide film on the surface of the nut to prevent the oxidation reaction of the nut in high temperature, high humidity and other environments.

These are some common surface treatments, our company produces Nuts, which are galvanized, black treatment, anti-oxidation treatment, anti-corrosion treatment, etc. Our main nuts are: Nylon Insert Lock Nut, Flange Nuts, Hexagon Nut, Hexagon Thin Nut.

ISO 4034 Hexagon Nut Standard: ISO4034 Thread Size: M5-M36 Class: ST-8/10/12/ A2-70/A4-80 Material: Stainless Steel / Carbon Steel Surface Treatment: Plain / Zinc Plated / VZD / ZSML / Zinc-Nickel /ZNBHL / ZNSHL / E2J / ZFSHL / ZFSHR / Delta-Tone / HDG / TZN