Fasteners countersunk head round body rivet nut surface can do what processing?

The advantages of surface oxidation of countersunk head round body rivet nut:

Blackening + oiling is a popular coating for industrial fasteners because it is the cheapest and looks before the oil runs out

It's good. Due to the almost no anti-rust ability of blackening, it quickly rusts when there is no oil. It is

In oily conditions, the neutral salt spray test can only reach 3 to 5 hours.

Blackened fastener torque—pre-tightening consistency is also poor. If you need to improve, you can install it in the interior

Apply grease to thread and revolve.

The surface of the countersunk head round body nuts can be blackened by oxidation.

Countersunk head round body nuts can be galvanized in addition to oxidation treatment.

Countersunk head round body nuts galvanizing benefits:

Electrogalvanizing is the most commonly used coating for commercial fasteners. It is cheaper and looks better. It can be black and green. However, its anti-corrosion performance is general, and its anti-corrosion performance is the lowest in the zinc plating (coating) layer.
In the normal electro-galvanized neutral salt spray test, within 72 hours, special sealing agents are also used, making the neutral salt spray test more than 200 hours, but the price is expensive, which is 5 to 8 times that of general galvanizing.