Steel Structure Torsion Shear Bolt
Bolt type:Large Size Hex bolt
Other name:Torsion shear bolt
Strength Grade:8.8S,10.9S,12.9S
Product Description
Steel Structure Torsion Shear Bolt is a bolt used to connect steel structures with excellent torsional shear properties. It is often used to connect structural members such as beams and columns to provide solid support and resistance to torsion. This bolt is made of high-strength steel and can withstand lateral and torsional forces, ensuring the stability and safety of the connection.
There are two types of steel structure bolts, one is steel structure large hexagonal head bolt connection pair, and the other is steel structure torsion shear type bolt connection pair (Torsional shear type high-strength bolt connection pair for steel structure), referred to as It is a steel structure large hexagonal head bolt or a steel structure torsion shear bolt. The connection pair means that it is not just a bolt, but a combination of bolts, nuts, and washers. This combination is used for connection and fastening.
Product Details
Name:Steel Structure Torsion Shear Bolt
Bolt type:Large Size Hex bolt
Other name:Torsion shear bolt
Strength Grade:8.8S,10.9S,12.9S
Surface treatment:Hot-dip galvanizing,DACROMET Coating
M12-M30
Brand:Lemar
Specification
Steel structure torsion shear bolt size = screw diameter d*thread length L
Default matching: 1 bolt + 1 flat washer + 1 nut
|
Specification |
M16 |
M20 |
(M22) |
M24 |
(M27) |
M30 |
|
|
P |
Pitch |
2 |
2.5 |
2.5 |
3 |
3 |
3.5 |
|
Dk |
Max |
30 |
37 |
41 |
44 |
50 |
55 |
|
K |
Max |
10.75 |
13.9 |
14.9 |
15.9 |
17.9 |
20.05 |
|
Min |
9.25 |
12.1 |
13.1 |
14.1 |
16.1 |
17.95 |
|
|
Z |
Max |
17 |
19 |
21 |
23 |
24 |
25 |
|
Dp |
Max |
11.3 |
14.1 |
15.6 |
16.9 |
19.3 |
21.4 |
|
Min |
11 |
13.8 |
15.3 |
16.6 |
18.7 |
20.8 |
|
The strength grades of steel structure bolts are generally 10.9S and 12.9S. Take 10.9S as an example
※Steel Structure Torsion Shear Bolt nominal tensile strength 1000MPa,
※Min tensile strength ≥1040MPa
※Nominal yield strength 900MPa
※Min yield strength 940MPa
※S stands for steel structure
This Large Size Hex bolt is generally treated with oxidation and blackening. To prevent hydrogen embrittlement, it cannot be cold-dip galvanized or hot-dip galvanized because the temperature during the hot-dip galvanizing process is above 520°C, and the return of heat treatment on high-strength bolts is The fire temperature is generally lower than 500°C, so hot-dip galvanizing will seriously reduce the mechanical properties of steel structure bolts. If there are high anti-rust requirements, it is more ideal to use Dacromet treatment instead! Nuts and washers are phosphated.
Product details
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10.9S 12.9S high strength material Forged with high-strength materials and heat treatment process, it has a higher load ratio
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Thread complete Steel Structure Torsion Shear Bolt owns Compact texture, uniform force, high anti-slip coefficient
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45# steel Thickened flat washer nut for higher strength. Surface phosphating greatly improves the stability of the preloaded axial force
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Plum Blossom Head The heads of Bolts are smooth and even, and when used with a torsion shear wrench, construction is more labor-saving.
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Product Application
10.9 12.9 grade Torsional shear type high strength bolt is suitable for beam-column links, web links of steel structures, and heavy-duty crane beam links of industrial plants, etc.
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