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J bolts with washers and nuts are fasteners used to secure objects to concrete, brick, or stucco. There are different types of bolts for specific applications. Some are used while the concrete is still wet, while others are used after the concrete has set. The size of the bolt will determine whether the object is properly held in place. Some will be curved with hooks at the end. The object must be large enough. Also, you need to secure them properly nearby, otherwise they will damage the wall. When installing on a concrete foundation, the J-shaped, L-shaped, 9-shaped, or U-shaped end of the bolt is buried in the concrete for use, so J-shaped anchor bolts, L-shaped anchor bolts, and 9-shaped anchor bolts appear. Anchor bolts and U-shaped anchor bolts of various styles.
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Size: 3/4"*12"
Brand:Lemar
Finish:Hot dip galvanized
Specification:4" thread with nuts and washers
Diameter:3/4"
Type:Adjustable J type bolt
Color:Silver plated
Material:Steel
Shipment:By sea or by train
Delivery time: In stock
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Thread nominal |
M8 |
M10 |
M12 |
M14 |
M16 |
M18 |
M20 |
M22 |
M24 |
M27 |
M30 |
M33 |
M36 |
M42 |
|
Nominal length |
50 |
60 |
300 |
400 |
500 |
600 |
700 |
800 |
900 |
1000 |
1100 |
1200 |
10200 |
|
|
Footing type |
Special/L type |
L type |
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Thread length |
50 |
60 |
100 |
150 |
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pitch |
1.25 |
1.5 |
1.75 |
2 |
2.5 |
3 |
3.5 |
4 |
4.5 |
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Customization is supported, please contact us! |
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Q: What are high-strength bolts?
Q: What is the difference between high-strength bolts and ordinary bolts?
High-strength bolts can withstand a greater load than ordinary bolts of the same specification.
The material of ordinary bolts is made of Q235 (i.e. A3).
High-strength external hexagonal bolts High-strength bolts are made of 35# steel or other high-quality materials. They are heat treated after being made to increase the strength.
Q: Are high-strength bolts made of the same materials as ordinary bolts?
The screws, nuts and washers of high-strength bolts are all made of high-strength steel, such as 45 steel, 40 boron steel, 20 manganese titanium boron steel, 35CrMoA, etc. Ordinary bolts are commonly made of Q235 (equivalent to the past A3) steel.
From the intensity level:
High-strength T-slot bolts, L-type bolts, 9-type bolts and other high-strength bolts are increasingly used.
Two intensity levels, 8.8s and 10.9s, are commonly used, with 10.9 being the most common.
The strength grade of ordinary bolts is lower, generally 4.4, 4.8, 5.6 and 8.8.
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As a professional fastener supplier, we Wuxi Laima Metal Products Co., Ltd. have a 5000 square meter factory building and more than 80 employees. The company's main production equipment includes thread rolling machines, wire drawing and cutting machines, welding machines, cold heading machines, bending machines and multiple professional workshops. The main products include high-strength anchor bolts, various screws, high-strength nuts, railway fasteners, photovoltaic fasteners, various stainless steel products, etc.
Our products are widely used in real estate, bridge engineering, photovoltaic products, railway engineering, and exported to all over the world. We have a professional design team and quality inspection team to strictly control quality requirements.
The daily output can reach 200 tons, the annual total output value reaches more than 60,000 tons, and the annual inventory exceeds 800 tons.
You are welcome to come to Wuxi Lema for inquiries at any time!
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http://www.lemarmetal.com/