Products Description
DIN 933 Grade 8.8 hex bolts are fully threaded, high-strength metric fasteners manufactured in accordance with German industrial standards.Grade 8.8 makes hex head bolts harder and more resistant to torque. These bolts offer greater safety, tighter fastening, and enhanced stability. Crafted from high-quality medium-carbon steel through a quenching and tempering process, these bolts offer high tensile strength, excellent toughness, and precise engagement. As a highly versatile core fastener in the industrial sector, the hex bolt complies with global mainstream equipment assembly standards, offering a balance of cost-effectiveness and durability. It is widely used to meet fastening requirements across various applications, including mechanical manufacturing, steel structures, and equipment installation.
Basic Product Information
| Product Name | DIN 933 Hex Head Full-Thread Bolts |
| Standard | DIN 933 (Full-Thread Hex Head Bolts) |
| Strength Grade |
Grade 8.8 (High Strength) Tensile Strength ≥ 800 MPa Yield Strength ≥ 640 MPa |
| Material | Medium-carbon steel (quenched and tempered) |
| Surface Treatment | Blue-white zinc, colored zinc, black zinc, blackening, hot-dip galvanizing |
| Thread Standard | Metric coarse thread M series |
| Thread Type | Full Thread |
our Products
Product Features
Our hex bolts are quenched and tempered, offering strength, toughness, and shear resistance far superior to Grade 4.8 bolts. They are suitable for industrial applications involving vibration, heavy loads, and high stress.
Featuring a DIN 933 full-thread design, installation depth is unrestricted. They offer flexible compatibility with nuts, flat washers, and spring washers, ensuring exceptional versatility.
The standard hex head is compatible with various wrenches and sockets, ensuring a secure fit that resists slippage. Ideal for heavy-duty assembly and on-site construction.
DIN 933 Grade 8.8 hex bolts undergo surface treatments such as galvanizing or blackening to enhance corrosion resistance, making them suitable for a wide range of applications including mechanical equipment, steel structures, and construction machinery.
Manufactured strictly in accordance with the DIN 933 standard, these bolts feature consistent dimensional accuracy and are compatible with European and international standard equipment, ensuring hassle-free cross-border procurement.
Applications
- Steel structure engineering, factory building supports, and bridge infrastructure fastening
- Assembly of machine tools, construction machinery, agricultural machinery, and heavy equipment
- Securing automotive chassis, engines, and tooling/fixtures
- Heavy-duty connections for pipes, valves, motors, fans, and similar components
- Industrial fastening applications requiring high strength and reliability
DIN 933 Grade 8.8 Common Size Chart
1) Key Dimensions (mm)
|
Thread Specifications |
Pitch P |
Flank Width S |
Head Thickness K |
Thread Type |
|
M6 |
1.0 |
10 |
4 |
Fully threaded |
|
M8 |
1.25 |
13 |
5.3 |
Fully threaded |
|
M10 |
1.5 |
17 |
6.6 |
Fully threaded |
|
M12 |
1.75 |
19 |
8.0 |
Fully threaded |
|
M14 |
2.0 |
22 |
9.0 |
Fully threaded |
|
M16 |
2.0 |
24 |
10.0 |
Fully threaded |
|
M20 |
2.5 |
30 |
12.5 |
Fully threaded |
|
M24 |
3.0 |
36 |
15.0 |
Fully threaded |
2) Common Length Series (mm)
12, 16, 20, 25, 30, 35, 40, 45, 50, 55, 60, 65, 70, 80, 90, 100, 110, 120, 130, 140, 150, 160, 180, 200
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