China Hexagon head bolts factory wholesale

Hexagon Head Bolts With Hexagon Nut For Steel Structures

Description

Metric Hex Head Bolts have a hex head and coarse or fine machine screw threads. Select from partially threaded or fully threaded.

Metric Hex Head Bolts have a hex head and coarse or fine machine screw threads. Select from partially threaded or fully threaded. All short lengths are fully threaded; for partially threaded the minimum thread length is longer for larger bolt sizes.

Hex head bolts are the most frequently used type of bolts. The main function of the external thread is to match the nut. With this threaded connection method, the two parts are integrated. Hexagon head bolts are mainly used on steel structure machinery and equipment where the surface is rough and the precision is not high.

Hex head bolt material

At present, the hexagonal screws on the market mainly include carbon steel and stainless steel.

Carbon steel. We distinguish low carbon steel, medium carbon steel and high carbon steel as well as alloy steel with carbon content in carbon steel.

1. low carbon steel C% ≤ 0.25% domestically known as A3 steel. Foreign countries are basically called 1008, 1015, 1018, 1022 and so on. Mainly used for products with no hardness requirements such as 4.8 bolts, 4 grade nuts, small screws (Note: 1022 material is mainly used for drilling tail nails).

2. Medium carbon steel is 0.25% and 0.45%. Currently it is basically not used on the market.

3. Alloy steel: Add alloying elements to the carbon steel to increase some special properties of the steel: such as 35, 40 chromium molybdenum, SCM435, 10B38. The main screw is SCM435 chrome-molybdenum alloy steel. The main components are C, Si, Mn, P, S, Cr and Mo.

Stainless steel. Performance grade: 45, 50, 60, 70, 80 Mainly divided into austenite (18% Cr, 8% Ni), good heat resistance, good corrosion resistance and good weldability. A1, A2, A4 Martensite and 13% Cr have poor corrosion resistance, high strength and good wear resistance. C1, C2, C4 ferritic stainless steel. 18%Cr has better forging properties and corrosion resistance is stronger than martensite. Currently, the imported materials on the market are mainly Japanese products. According to the level, it is mainly divided into SUS302, SUS304, and SUS316.

Why choose us?

a) Attention to detail, quality assurance

b) Wide sales network, excellent service, good reputation

c) Team professional, technical specialization, quality control

d) Full service network coverage, fast market response, fast delivery

e) The products are genuine, honest and trustworthy, and create more favorable offers for customers.

f) Large scale, large sales volume, many products, and wide application

g) Provide customers with correct and safe product training and consultation, product preservation and value-added

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