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Product Details
Product Standards
FAQ
About Boltead
Stud Bolt Product Photos
Stud bolts are Boltead’s products with relatively high production and supply. The following are photos of the products that using some of the more common surface treatments：
DIN938 Color Yellow Zinc Plated Steel Double Ending Stud Bolts
Stud bolt Product Describsion
Stud bolts are Boltead’s main product. We are a manufacturer of also a supplier of these products. While producing and supplying the product, we also produce nuts, washers and other fastener products used in conjunction with them.
The product we produce are generally classified according to whether the material is carbon steel or stainless steel. More specific classifications are as follows:
Carbon steel stud bolts are generally classified according to strength levels. The more common strength levels are: 4.8, 8.8, 10.9, and 12.9. Among them, these products with grade 8.8 or above are generally called high-strength stud bolts （high tensile stud bolts）.Stainless steel stud bolts are generally classified according to different materials. The more common stainless steel materials are SUS201 SUS304 SUS316
In addition to different materials and strengths, the biggest impact on stud bolts is surface treatment. The following are the more common surface treatments for stud bolts: black oxide, black zinc, zinc plated (ZP), color zinc plating (CZP /YZP), hot dip galvanized (HDG), dacromet coating, etc.
Stud Bolt Production Process
These product are sent from the raw material line to the final product. They generally go through the following process:
Annealing of raw materials – pickling – drawing – forming – grinding – heat treatment – surface treatment – classification – packaging – shipping
The rough schematic diagram is as follows:
stud bolts production process
Stud Bolt Application fields
Examples of Uses of Stud Bolts:
Flange Connections: These products are commonly used to secure flange connections in piping systems across various industries such as oil and gas, petrochemical, chemical processing, and power generation. These bolts provide a reliable and leak-free joint between flanges, ensuring the integrity of the piping system.
Pressure Vessels: These products are essential components in the assembly of pressure vessels used in industries like chemical processing, pharmaceuticals, and food processing. They securely fasten the vessel’s components together, ensuring that the vessel can withstand internal pressure safely.
Heat Exchangers: These products play a crucial role in the assembly of heat exchangers, which are used in various applications, including HVAC systems, refrigeration, and industrial processes. These bolts provide the necessary clamping force to maintain tight seals between heat exchanger components, facilitating efficient heat transfer.
Turbine Connections: In power generation facilities, these productss are utilized to connect turbine components such as casings, diaphragms, and blades. These bolts withstand the high temperatures and stresses encountered in turbine operation, ensuring the structural integrity of the turbine assembly.
Structural Steel Construction: These products are used in structural steel construction for connecting steel beams, columns, and other structural members. They provide a secure connection, contributing to the stability and strength of the overall structure in buildings, bridges, and infrastructure projects.
Machinery Assembly: These products are employed in the assembly of machinery and equipment across various industries, including automotive, aerospace, and manufacturing. They secure machine components together, ensuring proper alignment and functioning of the machinery.
Railroad Tracks: These products are used in the construction and maintenance of railroad tracks, where they secure rail joints and fasten rail components to the track structure. These bolts withstand the dynamic loads and vibrations associated with train operations, ensuring the safety and reliability of the railway system.
Marine and Shipbuilding: These products are employed in marine and shipbuilding applications for assembling ship structures, including hulls, decks, and bulkheads. They provide a strong and durable connection that withstands the harsh conditions of marine environments, including corrosion and vibration.
These examples illustrate the diverse range of applications for stud bolts across various industries and sectors, highlighting their importance in ensuring the integrity, safety, and reliability of engineered systems and structures.
For more information and knowledge about stud bolts, please check our blogs
DIN938 Stud Bolts Thick shank double-ended bolt
Thread specification
M3
M4
M5
M6
(M7)
M8
M10
M12
(M14)
M16
(M18)
M20
d
P
pitch
coarse teeth
0.5
0.7
0.8
1
1
1.25
1.5
1.75
2
2
2.5
2.5
fine teeth 1
–
–
–
–
–
1
1.25
1.25
1.5
1.5
1.5
1.5
fine teeth 2
–
–
–
–
–
–
–
1.5
–
–
–
–
b 1
3
4
5
6
7
8
10
12
14
16
18
20
b
L≤125
12
14
16
18
20
twenty two
26
30
34
38
42
46
125＜L≤200
18
20
twenty two
twenty four
26
28
32
36
40
44
48
52
L＞200
–
–
–
–
–
–
45
49
53
57
61
65
x 1
1.25
1.75
2
2.5
2.5
3.2
3.8
4.3
5
5
6.3
6.3
x 2
0.7
0.9
1
1.25
1.25
1.6
1.9
2.2
2.5
2.5
3.2
3.2
Thousand pieces of steel weight ≈kg
–
–
–
–
–
–
–
–
–
–
–
–
Thread specification
(M22)
M24
(M27)
M30
(M33)
M36
(M39)
M42
(M45)
M48
(M52)
d
P
pitch
coarse teeth
2.5
3
3
3.5
3.5
4
4
4.5
4.5
5
5
fine teeth 1
1.5
2
2
2
2
3
3
3
3
3
3
fine teeth 2
–
–
–
–
–
–
–
–
–
–
–
b 1
twenty two
twenty four
25
30
32
35
38
42
45
48
52
b
L≤125
50
54
60
66
72
78
84
90
96
102
110
125＜L≤200
56
60
66
72
78
84
90
96
102
108
116
L＞200
69
73
79
85
91
97
103
109
115
121
129
x 1
6.3
7.5
7.5
9
9
10
10
11
11
12.5
12.5
x 2
3.2
3.8
3.8
4.5
4.5
5
5
5.5
5.5
6.3
6.3
Thousand pieces of steel weight ≈kg
–
–
–
–
–
–
–
–
–
–
–
FAQ
How long is your delivery lead time?
Boltead’s delivery cycle is generally 7 to 15 days. If you need more product types and models, or need to customize, the delivery cycle will be longer. In this case, please confirm with our sales professional.
Can you provide samples? How to charge for samples?
Boltead can provide samples for your measurement and testing. The samples are free, and you only need to pay the shipping cost.
Do you support OEM product customization?
Of course. Boltead welcomes OEM/ODM orders. We can not only customize products for you, but also customize your product and its packaging.
What are your payment terms?
For payment amounts <= $1000, 100% prepayment is required. For payment amounts >$1000, 30% prepayment is required, with the balance due before shipment.
Can you provide the relevant documents？
Yes, we can provide most documents, such as material certificates, product testing certificates, certificates of origin, and insurance certificates.
Can you guarantee the safe and reliable delivery of products?
Yes, Boltead can ensure the safe and reliable delivery of products to you. Our product packaging will be reinforced beyond the packaging you choose.
What about the shipping cost?
The shipping cost depends on the delivery method you choose. Express delivery is typically the fastest but also the most expensive option. Sea freight is the best solution for large quantities of goods. We can provide an accurate shipping cost only when we have detailed information about the quantity, weight, and method. Please contact us for more information.
About Boltead Fastener
Boltead is committed to providing the world with the most suitable bolts and nuts!
We manufacture and supply fasteners, striving for excellence in every aspect.
Boltead producing fasteners since 2001.All the fasteners we produce have been supplied for export since 2018.
Certificate
Production Process
Product Test
Exhibition/Partner Photos
Our export countries include Russia, South Korea, Britain, France, Germany, Italy, Canada, Mexico,Brazil, Argentina, Chile, Australia, Indonesia, Thailand, Singapore, Saudi Arabia, Syria, Egypt, Tanzania,Kenya and other countries. Our products will be spread all over the world!
Contact us
If you need fasteners, contact us immediately！
Boltead – Bolts & Nuts
Add : South of Ximingyang Village, Linmingguan Town, Yongnian District, Handan City, Hebei Province,CHINA
