Hex Bolt Manufacturer | Custom Hex Bolt | 19 Years of Fastener Manufacturing Experience
As a fastener manufacturing plant with 19 years of experience, we specialize in large-scale production and custom-made Hex Bolts, serving long-term wholesale customers, OEM project clients, and industrial buyers with extremely high requirements for quality consistency.
Huizhou Zeyao Hardware Products Co., Ltd. specializes in the production of custom fasteners, including screws, bolts, nuts, washers, pins, spacers, standoffs, rivets, CNC-milled parts, and CNC-turned parts. Our products find extensive application across various industries, such as automotive manufacturing, electronics, construction, aerospace, industrial machinery, medical devices, furniture, household goods, railway transportation, and more.
Hex Bolts are among the most widely used fasteners in the industrial, construction, and machinery sectors, but they are not simply "standard parts." In real-world applications, different operating environments, stress patterns, and installation structures place specific requirements on the materials, strength, thread precision, and surface finish of Hex Bolts. Therefore, choosing a genuine Hex Bolt manufacturer is more important than simply comparing prices or catalog specifications.
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![Heavy Hex Bolts]()
Heavy Hex BoltsMaterial: Carbon steelview more
Strength grade: 4.8 / 6.8 / 8.8
Customization: OEM/ODM
Manufacturer: zeyao
Packaging: Bulk/Bagged/Boxed
Certifications: ISO 9001/SGS/TUV -
![Aluminum Hex Head Bolt]()
Aluminum Hex Head BoltThe aluminum hex head bolt is a lightweight, strong, and corrosion-resistant fastening. It's suitable for a variety of demanding industries, including automotive, machinery, aerospace, and...view more -
![Square Head Bolt]()
Square Head BoltThe square head bolt is a high-performance fastening known for its superior corrosion resistance and strength. It can endure harsh environments and is ideal for use in demanding applications.view more -
![Button Head Flanged Head Bolt]()
Button Head Flanged Head BoltThe button head flanged bolt is designed with a button head, a flange, and a threaded shaft. The button head makes the installation and removal easier. The flange increases the surface area of...view more -
![Phillips Flanged Head Bolt]()
Phillips Flanged Head BoltThe Phillips flanged head bolt is a high-strength fastening. Its Phillips head increases the contact area with tools, which makes the installation and removal quick and easy. The flange underneath...view more -
![Through Hole Vented Bolt]()
Through Hole Vented BoltThe through-hole vented hex bolt is designed with a unique feature: a hole at the head. This hole allows the bolt to absorb and transmit greater loads, making it an ideal choice for high-stress...view more
Specification
|
D |
P |
K |
S |
||
|
Max |
Min |
Max |
Min |
||
|
M3 |
0.5 |
2.2 |
1.9 |
5.5 |
5.25 |
|
M4 |
0.7 |
3 |
2.8 |
7 |
6.65 |
|
M5 |
0.8 |
3.74 |
3.26 |
8 |
7.65 |
|
M6 |
1 |
4.24 |
3.76 |
10 |
9.65 |
|
M7 |
1 |
5.04 |
4.56 |
11 |
10.57 |
|
M8 |
1.25 |
5.54 |
5.06 |
13 |
12.57 |
|
M10 |
1.5 |
6.69 |
6.11 |
17 |
16.57 |
|
M12 |
1.75 |
7.79 |
7.21 |
19 |
18.48 |
|
M14 |
2 |
9.09 |
8.51 |
22 |
21.16 |
|
M16 |
2 |
10.29 |
9.71 |
24 |
23.16 |
|
M18 |
2.5 |
11.85 |
11.15 |
27 |
26.15 |
|
M20 |
2.5 |
12.85 |
12.15 |
30 |
29.16 |
Types of Hex Bolt
The hex bolts produced by our company mainly include the following types:
Square Head Bolt
The square head bolt is a high-performance fastening known for its superior corrosion resistance and strength. It can endure harsh environments and is ideal for use in demanding applications.
Button Head Flanged Head Bolt
LThe button head flanged bolt is designed with a button head, a flange, and a threaded shaft. The button head makes the installation and removal easier. The flange increases the surface area of contact between the bolt and the connected parts, which helps to reduce the risk of damage to the surface.
Phillips Flanged Head Bolt
The Phillips flanged head bolt is a high-strength fastening. Its Phillips head increases the contact area with tools, which makes the installation and removal quick and easy. The flange underneath the head provides more surface area in contact with the connected material, ensuring a better, more secure fit and enhancing the bolt's sealing capabilities.
OEM/ODM Customization
Dimensions and Structure
Bolt Diameter: M4 – M42 or custom-made according to drawings
Length, Tolerances, Thread Length
Full thread / Half thread / Special thread design
Hex head height, cross-flat dimensions custom-made
Material Selection
Carbon steel (low carbon steel, medium carbon steel, alloy steel)
Stainless steel (304 / 316 /)
Alloy materials or customer-specified material standards
Strength Grade
4.8 / 8.8 / 10.9 / 12.9
Or customized mechanical property parameters according to application environment
Surface Treatment
Zinc plating (white zinc, blue-white zinc, color zinc)
Dacromet
Black anodizing
Phosphating
Other anti-corrosion or appearance treatment solutions
Special Requirements
Anti-loosening design
Applications in highly corrosion-resistant environments
High temperature or high-intensity working conditions
Hex Bolt Thread Type
Partially-Threaded Hex Bolts
Partially-threaded hex bolts are only threaded from partway down the bolt’s length to the end. An unthreaded shank (also known as grip length) joins the threaded shank and the head. Partially-threaded bolts provide strong levels of resistance. Strain on the unthreaded part of the shank is prevented by the design which ensures that section has no weak spots.
Fully-Threaded Hex Bolts
Fully-threaded hex bolts are threaded from the end of the bolt right up to the head. They are ideal for use in heavy-duty fastening applications and are best suited to installation in pre-threaded holes. Properly installed fully-threaded hex bolts are designed to spread the pressure across the full length of the bolt, providing a greater level of strength than partially-threaded alternatives.
Steps for Tightening Hex Bolts
Using a Socket Wrench
Socket wrenches are for hex bolts with an indentation or opening on the top. Before you begin, make sure you have the correct size socket to match the bolt you’re trying to install or remove. Then, follow these steps:
- Place the square hold onto the socket’s square knob to attach.
- Wait until you hear or feel a click, indicating the wrench and socket are connected.
- Choose which direction you want to move on your wrench by turning the dial to the right for tightening or left for loosening.
- Place the socket on the bolt. Twist the wrench all the way to one side until you feel the bolt remove.
- If you have a ratcheting socket wrench, instead of removing the wrench, twist it back to the starting point and repeat the same process until the bolt is in or out.
Using a Standard Wrench
As with socket wrenches, standard wrenches are available in various sizes and widths and need to match the bolt you’re installing or removing. Open-end wrenches surround a hex-head bolt on four sides and can slide sideways onto a bolt in a hard-to-reach place. Box-end wrenches are closed and must be placed over the top of the bolt. Some box-end wrenches have ratchet capabilities. Here’s how a standard wrench works:
- Choose the wrench with a corresponding size to your bolt.
- Set the wrench around the bolt.
- Turn clockwise to tighten or counterclockwise to loosen.
- If your wrench doesn’t have ratchet action, remove the wrench and reset it on the bolt to continue turning.
- Repeat the process until the bolt is tightened or loosened.
Using an Adjustable Wrench
An adjustable wrench has a moveable jaw so you can make the wrench bigger and smaller as needed to match the size of the bolt. You don’t need to find the matching size tool with an adjustable wrench, but it won’t ratchet. Here’s how to use an adjustable wrench.
- Place the wrench loosely around the bolt.
- Adjust the wrench until it fits tightly around the head.
- As with a standard wrench, turn clockwise to tighten or counterclockwise to loosen.
- Remove the wrench and reset to continue turning, and repeat until the bolt is in or out.
Cooperation Process
Requirements Communication
Provide drawings, samples, or technical parameters, explaining the application scenario.
Technical Assessment and Solution Confirmation
We assess manufacturability, materials, and costs, and provide optimization suggestions.
Quotation and Sample Confirmation
Provide a clear quotation, supporting sample or small-batch trial production.
Mass Production
Organize production according to the confirmed plan, strictly controlling delivery time and quality.
Inspection and Shipment
Pre-shipment inspection, supporting multiple logistics methods.
Long-Term Cooperation and Repeat Purchase Support
Establish product files for easy and rapid repeat purchases.
Our Certificate
FAQ
We're professional hex bolt manufacturers and suppliers in China, specialized in providing high quality products and service. We warmly welcome you to wholesale customized hex bolt made in China here from our factory.
hex bolt, Aluminum Hex Head Bolt, Phillips Flanged Head Bolt
