Factory Direct OEM Grade 12.9 Black Oxide Threaded Rod Studs Bolt

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Is it easy for black double end threaded stud screw bolt?

After the black double end threaded bolt is treated with black anti-corrosion, a layer of oxide is formed on its surface, which has certain anti-corrosion and anti-oxidation capabilities. Therefore, it is less likely to rust in the short term than ordinary bolts. However, long-term contact with the external environment, such as humid air, water vapor, oxygen, etc., will cause oxidation reaction on the surface of the double end threaded rod and produce rust, so the rust of the double end threaded stud cannot be completely avoided.

FIXDEX Factory2 double end threaded stud screw bolt

double end threaded bolt workshop