| Nominal Diameter |
Dia. (b) |
Across Flats |
Across Corners |
h |
r |
Thread length (l) |
| (Max.) |
(Max.) |
(Min.) |
(Max.) |
(Min.) |
(Max.) |
(Min.) |
(Max.) |
(Min.) |
6 inch. or Shorter |
over 6 inch. |
| 1/4 " |
.2500 |
.375 |
.362 |
.530 |
.498 |
.188 |
.156 |
0.03 |
0.01 |
.750 |
1.000 |
| 5/16 " |
.3125 |
.500 |
.484 |
.707 |
.665 |
.220 |
.186 |
0.03 |
0.01 |
.875 |
1.125 |
| 3/8 " |
.3750 |
.562 |
.544 |
.795 |
.747 |
.268 |
.232 |
0.03 |
0.01 |
1.000 |
1.250 |
| 7/16 " |
.4375 |
.625 |
.603 |
.884 |
.828 |
.316 |
.278 |
0.03 |
0.01 |
1.125 |
1.375 |
| 1/2 " |
.5000 |
.750 |
.725 |
1.061 |
.995 |
.348 |
.308 |
0.03 |
0.01 |
1.250 |
1.500 |
| 5/8 " |
.6250 |
.938 |
.906 |
1.326 |
1.244 |
.444 |
.400 |
0.06 |
0.02 |
1.500 |
1.750 |
| 3/4 " |
.7500 |
1.125 |
1.088 |
1.591 |
1.494 |
.524 |
.476 |
0.06 |
0.02 |
1.750 |
2.000 |
| 7/8 " |
.8750 |
1.312 |
1.269 |
1.856 |
1.742 |
.620 |
.568 |
0.06 |
0.02 |
2.000 |
2.250 |
| 1 " |
1.0000 |
1.500 |
1.450 |
2.121 |
1.991 |
.684 |
.628 |
0.09 |
0.03 |
2.250 |
2.500 |
| 1-1/8 " |
1.1250 |
1.688 |
1.631 |
2.386 |
2.239 |
.780 |
.720 |
0.09 |
0.03 |
2.500 |
2.750 |
| 1-1/4 " |
1.2500 |
1.875 |
1.812 |
2.652 |
2.489 |
.876 |
.812 |
0.09 |
0.03 |
2.750 |
3.000 |
| 1-3/8 " |
1.3750 |
2.062 |
1.994 |
2.917 |
2.738 |
.940 |
.872 |
0.09 |
0.03 |
3.000 |
3.250 |
| 1-1/2 " |
1.5000 |
2.250 |
2.175 |
3.182 |
2.986 |
1.036 |
.964 |
0.09 |
0.03 |
3.250 |
3.500 |
Design and Features of Square Head Bolt:
The Square Head Bolt is designed for ease of use and secure fastening in applications requiring maximum strength and stability. Its square-shaped head provides better grip during installation and prevents any slippage or rotation while tightening, even in confined or tough spaces. This bolt’s design ensures that tools, such as wrenches, can easily apply the required torque without the risk of rounding off the bolt head. As a result, square head bolts are highly favored in construction, automotive, and heavy machinery applications. These bolts are typically manufactured with precision to meet international standards like DIN, ensuring excellent performance and long-lasting reliability.
Material and Finish Options:
Square head bolts are available in a variety of materials and finishes to suit diverse operational requirements. Common materials include stainless steel, carbon steel, and alloy steel, each offering superior strength and corrosion resistance. For outdoor or industrial applications, square head bolts are often coated with galvanized, zinc-plated, or black oxide finishes to ensure enhanced durability and resistance to rust. These finishes are particularly useful in marine environments or high-humidity areas where bolts may be exposed to moisture or chemicals. Selecting the right material and finish for your square head bolt is critical for ensuring optimal performance and longevity.
Applications of Square Head Bolts:
Square head bolts are essential in a wide range of industries, including construction, automotive, machinery, and infrastructure. These bolts are commonly used in heavy-duty applications where maximum strength is necessary, such as in securing beams, frameworks, and structural components. Due to their ability to withstand significant pressure and tension, square head bolts are frequently used in bridges, railways, and large machinery. Their secure fastening capabilities make them ideal for applications where vibration, movement, or harsh environmental conditions are present. Additionally, square head bolts can be used for electrical, plumbing, and HVAC installations, ensuring versatility across various sectors.
Standard Compliance and Quality Assurance:
At Pankaj International, we ensure that every square head bolt is manufactured according to the highest industry standards, including DIN and other international certifications. These standards guarantee the performance and safety of each fastener in critical applications. Our square head bolts undergo rigorous quality control checks, including hardness testing and material verification, to ensure they meet or exceed user guidelines. We are committed to providing bolts that not only meet the necessary specifications but also deliver exceptional reliability under varying loads and operating conditions. Whether used in low-stress or high-stress applications, you can rely on our square head bolts to perform as expected.
Available Sizes and Customization:
Our square head bolts come in a wide range of sizes and are available for customization based on your specific requirements. We understand that different industries and projects demand unique specifications. Whether you need smaller bolts for precision work or large bolts for heavy-duty applications, we can provide the right size to fit your needs. Additionally, we offer customization options in terms of threading, length, and finish to meet the particular demands of your project. You can rely on Pankaj International for bespoke solutions, ensuring that you have the perfect fastener for your specific application.
Why Choose Pankaj International for Your Square Head Bolts:
As one of the best fastener manufacturers in India, Pankaj International is your trusted partner for high-quality square head bolts. Our commitment to excellence and customer satisfaction ensures that every product we manufacture meets the highest standards of performance, durability, and precision. We offer a wide selection of square head bolts, made from the finest materials and designed for maximum strength and reliability. Whether you're working on an industrial project, construction site, or machinery installation, Pankaj International provides fasteners that deliver on both quality and value. Contact us today for expert support and to place your order!