High Strength Blackening Finish Rust Prevention Half Metric Thread Hex Head Bolt Fastener

Black oxide surface treatment of high-strength bolts is a common method of chemical treatment. The surface of steel parts is blackened, and some are also called blue.The principle is to form an oxide film on the surface of the metal to isolate the air and achieve the purpose of rust prevention. When the appearance requirements are not high, black oxide surface treatment can be used.

Specification:

1. Item name:Blackening hex head bolt

2. Standard: DIN931, ISO 4014
3. Grade:,8.8,10.9,12.9

4. Head type: Hex Head

5. Size: M5-M64
6. Material: Carbon Steel

7. Finish: Blackening
8. Delivery time: 8-30 days

9. Package: cartons / plywood cases / pallets

10. Shipment: By sea or By air

11. Loading port: Normal China port

FAQ:

Shaanxi Flourish Industrial Co., Ltd specializes in manufacturing and supplying various fasteners & some pipe fittings. Bolts, nuts, washers, screws, plugs, couplings,end dishes, gaskets and flanges round out our most popular categories, while our extensive collection of standoffs, pins and rivets are commonly purchased for use in construction.Most of our products are usually used in structural steel, metal building, oil&gas, photovoltaic, electricity, wind energy, mechanical machine and automobile etc. Due to different uses in many industries, we can cater to various requirements of our customers for materials,coating and sizes.

By the advanced production equipment and production technology, we can not only produce products that meet German, American and ISO standards,but also customize them according to purchasers' drawings or needs. More importantly, we also provide top-notch solutions for engineering projects related with our products.

Our quality products and efficient team service makes us continuous growth and also set up more business relationships with more customers in the world. All the products are mainly exported to Europe, Middle East and South America, Southeast Asia and Australia.Your esteemed company is welcome to join.

We sold our products in bulk quantities, generally for industrial use. Visit our website to explore our extensive range of products and see how we can meet your specific needs. We also offer online chat on our website for quick, convenient assistance.

What you really need is the direction in which we are working.