ASTM A325 structural bolts are high-strength bolts commonly used in construction and structural steel applications. They are designed to withstand the heavy loads and stresses typical in steel frame structures, bridges, and other critical infrastructure. These bolts comply with the ASTM A325 standard, which specifies their materials, mechanical properties, and manufacturing processes to ensure reliable performance in harsh conditions.
Product Parameters
|
Drive Style |
Heavy Hex Head Bolts |
|
Screw Features |
Heavy Hex |
|
System of Measurement |
Inch |
|
Thread Direction |
Right Hand |
|
Threading |
Fully threaded |
|
Thread Fit |
Class 2A |
|
Thread Spacing |
Coarse |
|
Grade/Class |
ASTM A325 Type1 |
|
Material |
Medium carbon steel |
|
Standard |
ASME B18.2.6 |
|
Finish |
Black Oxide |
|
RoHS |
RoHS 3 (2015/863/EU) Compliant |
|
Country of Origin |
China |
Product Drawing
|
Heavy hex structural bolts |
||||||||||
|
ASTM A325/ A490 ASME/ANSI B18.2.6-2011 |
||||||||||
|
|
||||||||||
|
d(inch) |
1/2 |
5/8 |
3/4 |
7/8 |
1 |
1-1/8 |
1-1/4 |
1-3/8 |
1-1/2 |
|
|
P(inch) |
13 |
11 |
10 |
9 |
8 |
7 |
7 |
6 |
6 |
|
|
ds(inch) |
min |
0.482 |
0.605 |
0.729 |
0.852 |
0.976 |
1.098 |
1.223 |
1.345 |
1.47 |
|
max |
0.515 |
0.642 |
0.768 |
0.895 |
1.022 |
1.149 |
1.277 |
1.404 |
1.531 |
|
|
s(inch) |
Nom |
7/8 |
1-1/16 |
1-1/4 |
1-7/16 |
1-5/8 |
1-13/16 |
2 |
2-3/16 |
2-3/8 |
|
min |
0.85 |
1.031 |
1.212 |
1.394 |
1.575 |
1.756 |
1.938 |
2.119 |
2.3 |
|
|
max |
0.875 |
1.062 |
1.25 |
1.438 |
1.625 |
1.812 |
2 |
2.188 |
2.375 |
|
|
e(inch) |
min |
0.969 |
1.175 |
1.383 |
1.589 |
1.796 |
2.002 |
2.209 |
2.416 |
2.622 |
|
max |
1.01 |
1.227 |
1.443 |
1.66 |
1.876 |
2.093 |
2.309 |
2.526 |
2.742 |
|
|
k(inch) |
Nom |
5/16 |
25/64 |
15/32 |
35/64 |
39/64 |
11/16 |
25/32 |
17/32 |
15/16 |
|
min |
0.302 |
0.378 |
0.455 |
0.531 |
0.591 |
0.658 |
0.749 |
0.81 |
0.902 |
|
|
max |
0.323 |
0.403 |
0.483 |
0.563 |
0.627 |
0.718 |
0.813 |
0.878 |
0.974 |
|
|
b(inch) |
Ref. |
1 |
1.25 |
1.38 |
1.5 |
1.75 |
2 |
2 |
2.25 |
2.25 |
Advantages of ASTM A325 Structural Bolts
1.High strength:
A325 bolts are designed for high-load applications and can withstand tremendous tensile forces.
2.Durability:
When properly installed and maintained, A325 bolts are highly durable and perform well in harsh environments-especially when galvanized, which enhances their corrosion resistance.
3.Cost-effective:
ASTM A325 bolts balance performance and cost, making them a cost-effective solution for heavy-duty applications.
4.Easy to install:
The thickened hexagonal head design simplifies installation by allowing better grip and torque application, reducing the risk of under- or over-tightening.
5.Versatility:
A325 bolts are widely used across multiple industries, from construction to manufacturing, for various steel structure connections.
Installation and Maintenance
1.Proper torque control:
Applying the correct torque during installation is critical to ensuring the bolts perform as expected. Overtightening can cause damage or failure, while undertightening may lead to loose connections.
2.Bolt pre-tightening:
In critical applications, pre-tightening methods such as nut rotation or direct tension indicators can be used to ensure bolts are tightened to the required tension.
3.Inspection:
Regular inspections are essential, especially in environments prone to corrosion, wear, or fatigue. Signs of corrosion, loose bolts, or structural damage should be addressed promptly to maintain structural integrity.
4.Replacement and upgrade:
Bolts showing signs of wear, corrosion, or damage should be replaced promptly to avoid compromising structural safety.
Key Adjustments:
Lowercased "Structural Bolts" in the ope
Hot Tags: astm a325 structural bolts, China astm a325 structural bolts manufacturers, suppliers, factory
