Fasteners are a very wide range of mechanical parts used to connect parts. Fasteners include Bolts, Screws, Nuts. If Screws, Nuts, Bolts and Screws have Threads, they are called Threaded Fasteners. The thread is divided into Full Thread and Half Thread. The Standard of Bolts are: British, German and American. National Standard Fasteners are Identified as Standard Fasteners or Referred to as Standard Parts. (1) Bolt: A type of Fastener Composed of Two Parts, Head and Screw (Cylinder with External Thread), Bolt and Nut are used to Fix parts with through Holes

Peculiarity：

• Many Specifications
• Different Performance Uses
• High Standardization, Serialization and Generalization

Material:

4.8 Grade、8.8 Grade、10.9 Grade、12.9 Grade、35#、35CrMo、B16、A193 Gr.B7、A193 Gr.B7M、A193 Gr.B8、A193 Gr.B8M、A320 Gr.L7、A320 Gr.L7M、A2(304)、A4（316）、660 F51、F53、F55 Nickel-based alloy materials

Product Surface Treatment:

Black Paint, PTFE(Teflon), Nickel Plating (Ni), Galvanized Passivation, Galvanized Nickel, Dacromet, Cadmium Plating... Different materials are suitable for Different Corrosive Environments.

Standard:

• Bolt:GB799 GB897-901 GB15389 GB4707
• SH3404 HG20613 HG20634 ANSI/ASME B18.2.1 B18.2.3.5M B18.2.6M
• Nuts: GB6170、GB6175、HG20613、HG20634、SH3404、ASME B18.2.2、ASME B18.2.4.1M、ASME B18.2.4.2M、ASME B18.2.4.6M

Application:

Energy (Electronics, Electrical appliances, Machinery, Chemical, Metallurgy, Mold, Hydraulic) Machinery, Equipment, Vehicles, Ships, Railways, Bridges, Buildings, Structures, Tools, Instruments.