| d |
Ds |
Dc |
Dk |
k |
h |
d1 |
b |
| Max. |
Min. |
Min. |
Min. |
| 1/4" |
0.2435 |
0.375 |
0.365 |
0.278 |
0.058 |
.058 |
.244 |
1 |
| 5/16" |
0.3053 |
0.469 |
0.457 |
0.348 |
0.074 |
.074 |
.306 |
1.125 |
| 3/8" |
0.3678 |
0.562 |
0.55 |
0.42 |
0.095 |
.095 |
.368 |
1.25 |
| 7/16" |
0.4294 |
0.656 |
0.642 |
0.489 |
0.109 |
.0109 |
.429 |
1.375 |
| 1/2" |
0.4919 |
0.750 |
0.735 |
0.562 |
0.129 |
.129 |
.493 |
1.5 |
| 9/16" |
0.5538 |
0.844 |
0.828 |
0.633 |
0.145 |
|
|
1.625 |
| 5/8" |
0.6163 |
0.938 |
0.921 |
0.705 |
0.166 |
.166 |
.555 |
1.75 |
| 3/4" |
0.7406 |
1.125 |
1.107 |
0.847 |
0.2 |
.200 |
.743 |
2 |
| 7/8" |
0.8647 |
1.312 |
1.293 |
0.987 |
0.234 |
.234 |
.866 |
2.25 |
| 1" |
0.9886 |
1.5 |
1.479 |
1.13 |
0.268 |
.268 |
.991 |
2.5 |
| 1-1/8" |
1.1086 |
1.688 |
1.665 |
1.271 |
0.31 |
.310 |
1.115 |
2.75 |
| 1-1/4" |
1.2336 |
1.875 |
1.852 |
1.414 |
0.35 |
.350 |
1.240 |
3 |
| 1-3/8" |
1.3568 |
2.062 |
2.038 |
1.556 |
0.392 |
|
|
3.25 |
| 1-1/2" |
1.4818 |
2.25 |
2.224 |
1.697 |
0.433 |
.433 |
1.489 |
3.5 |
Introduction to 12 Point Flange Bolts
The 12 Point Flange Bolt is a cutting-edge fastener solution designed for applications that demand high strength and reliability. Unlike traditional hex bolts, the 12-point head offers a unique advantage: it allows for enhanced torque application without rounding or slipping, ensuring a secure and precise fit even in challenging environments. The integrated flange eliminates the need for separate washers, providing uniform clamping force while reducing installation time. With exceptional resistance to loosening under vibration and dynamic loads, these bolts are trusted across industries for critical assemblies.
Design and Material Options
At the core of the 12 Point Flange Bolt’s design is its 12-point head, which resembles a double hexagon. This innovative shape increases the contact surface area, ensuring that tools grip securely and reduce wear during installation. The integrated flange, located beneath the head, acts as a built-in washer, distributing the load evenly across the surface and preventing damage to connected materials.
Pankaj International manufactures these bolts in a variety of materials, such as:-
- Stainless Steel: Offers excellent corrosion resistance and longevity, ideal for outdoor or marine applications.
- High-Grade Alloy Steel: Provides unmatched strength for heavy-duty uses in automotive and aerospace sectors.
- Carbon Steel with Zinc Coating: Combines cost-effectiveness with added resistance to oxidation and wear.
- Galvanized Steel: Ensures protection against rust, extending the bolt’s service life in harsh environments.
Key Features and Benefits
12 Point Flange Bolts stand out due to their unique features and unmatched benefits:-
- High Torque Application: The 12-point head allows for better torque transfer, reducing the risk of slipping during installation.
- Flange Integration: Provides uniform clamping force and eliminates the need for additional washers.
- Corrosion Resistance: Material coatings such as galvanized or zinc plating enhance resistance to environmental damage.
- Compact Design: Suitable for tight spaces where traditional fasteners may not fit.
- Durability Under Stress: Withstand high dynamic loads and vibrations, ensuring long-term reliability.
- Wide Compatibility: Designed to meet international standards, making them suitable for global industries.
Applications of 12 Point Flange Bolts
12 Point Flange Bolts are versatile and used across a wide range of industries:-
- Automotive Industry: Integral to engine assembly, drivetrain components, and suspension systems due to their ability to handle high temperatures and loads.
- Aerospace Engineering: Used in aircraft structures and components where lightweight strength and reliability are essential.
- Heavy Machinery: Secures critical parts in construction and agricultural equipment subjected to extreme stress.
- Oil and Gas: Withstands harsh environments, providing secure connections in pipelines and drilling equipment.
- Marine Applications: Designed to resist corrosion, making them ideal for boats and offshore structures.
Tables and Drawings for 12 Point Flange Bolts
To ensure customers can select the right fastener for their applications, we provide detailed size charts, technical tables, and engineering drawings for our 12 Point Flange Bolts. These resources include:-
- Dimensional Data: Precise measurements such as thread size, bolt length, and flange diameter.
- Torque Specifications: Recommended torque values for proper installation and maximum performance.
Material Grades and Coating Options: Allowing customers to choose bolts tailored to specific environmental and operational needs.
These tools are indispensable for engineers and technicians who require accuracy and reliability in their fastener choices.
Why Choose Pankaj International?
As one of the best fastener manufacturers in India, Pankaj International is committed to producing high-quality fasteners that meet global standards. Our 12 Point Flange Bolts are crafted with precision, ensuring they perform exceptionally in even the most demanding conditions. With a wide range of options available, we cater to industries worldwide, delivering bolts that combine innovation, durability, and affordability. In addition to 12 Point Flange Bolts, our extensive product portfolio includes lock bolts and collars, ensuring comprehensive fastener solutions for all industrial applications. Our commitment to excellence and customer satisfaction has made us a leader in fastener manufacturing in India and a trusted name globally.