Specification：5/16"-9 x 3"
Customers can customize the specifications
The surface treatment in addition to dacromet can also do nickel or zinc plating(coloured zinc and white zinc)
The surface treatment color may have the bronze color, the light bronze color, the teal gray color and so on, may make to order by the customer.
All screws are salt mist tested. The proportion of salt water is 5% and the requirement of salt fog is 1000-3000 hours. After the test, all the screws are free from rust.
Bolts are suitable for all wet conditions. We adhere to strict requirements, using high quality materials on the market, so these screws have strong corrosion resistance, will support all your projects.
It lasts longer than screws made from other materials on the market.
Hex head with washer lag screw are suitable for indoor and outdoor use, with good water resistance.
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