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As a premier manufacturer of industrial fastening solutions, GIC Fasteners proudly presents a comprehensive lineup of square head machine bolts meticulously engineered to meet stringent industry standards. Our square head bolts adhere to a range of international specifications including DIN, ASTM, ISO, and BS, ensuring compatibility and reliability across diverse applications. Crafted with precision and expertise, our bolts are synonymous with durability, strength, and performance, making them indispensable in various sectors from construction to manufacturing. GIC Fasteners employs cutting-edge technology and rigorous quality control measures to produce square head machine bolts that exceed expectations, providing customers with peace of mind and confidence in their projects' integrity and stability. Trust GIC Fasteners as your trusted partner for premium-quality square head machine bolts, and experience the difference in precision engineering and exceptional performance.
When it comes to securing heavy machinery and structural components, square head machine bolts are a fundamental component, and at GIC Fasteners, we specialize in providing top-notch solutions for all your fastening needs. Our square head machine bolts are meticulously crafted to exacting standards, ensuring unmatched durability and reliability in diverse industrial applications. Engineered with precision and manufactured from premium materials, our bolts offer exceptional strength, making them the go-to choice for professionals who demand nothing but the best.
At GIC Fasteners, we pride ourselves on delivering superior products backed by expert knowledge and unparalleled customer service. If you’re in search of square head machine bolts that you can trust to withstand the rigors of your operations, look no further. Contact our team at sales@gicfasteners.com today to discuss your requirements and experience the difference that GIC Fasteners can make in optimizing your projects. Trust GIC Fasteners for all your fastening needs, and elevate your projects with confidence and reliability.
| Standard | : | DIN, ASTM, BS, ISO, JIS, IS, GB, IS 4190 and all other International Standards |
| Length | : | 3 mm to 200 mm |
| Size | : | M3 – M56 | 3/6″ to 2″ | Custom Sizes |
| Threads: | : | BSF, UNF METRIC, UNC, BSW or as required |
| Finish | : | Plain, black, zinc plated (Cr,3+), zinc plated(Cr,6+), hot dipped galvanized, dacromet, nickel plated, cadmium plated, etc. |
| Nominal Size or Basic Product Diameter | E | F | G | H | R | L1 | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Full-Size Body Diameter | Width Across Flats | Width Across Corners | Head Height | Radius of Fillet | Thread Length for Bolt Lengths |
||||||||||
| 6 in. and Shorter | Over 6 in. | ||||||||||||||
| Max | Min | Basic | Max | Min | Max | Min | Basic | Max | Min | Max | Min | Nom | Nom | ||
| 1/4 | 0.2500 | 0.260 | 0.237 | 3/8 | 0.375 | 0.362 | 0.530 | 0.498 | 11/64 | 0.188 | 0.156 | 0.03 | 0.01 | 0.750 | 1.000 |
| 5/16 | 0.3125 | 0.324 | 0.298 | 1/2 | 0.500 | 0.484 | 0.707 | 0.665 | 13/64 | 0.220 | 0.186 | 0.03 | 0.01 | 0.875 | 1.125 |
| 3/8 | 0.3750 | 0.388 | 0.360 | 9/16 | 0.562 | 0.544 | 0.795 | 0.747 | 1/4 | 0.268 | 0.232 | 0.03 | 0.01 | 1.000 | 1.250 |
| 7/16 | 0.4375 | 0.452 | 0.421 | 5/8 | 0.625 | 0.603 | 0.884 | 0.828 | 19/64 | 0.316 | 0.278 | 0.03 | 0.01 | 1.125 | 1.375 |
| 1/2 | 0.5000 | 0.515 | 0.482 | 3/4 | 0.750 | 0.725 | 1.061 | 0.995 | 21/64 | 0.348 | 0.308 | 0.03 | 0.01 | 1.250 | 1.500 |
| 5/8 | 0.6250 | 0.642 | 0.605 | 15/16 | 0.938 | 0.906 | 1.326 | 1.244 | 27/64 | 0.444 | 0.400 | 0.06 | 0.02 | 1.500 | 1.750 |
| 3/4 | 0.7500 | 0.768 | 0.729 | 1-1/8 | 1.125 | 1.088 | 1.591 | 1.494 | 1/2 | 0.524 | 0.476 | 0.06 | 0.02 | 1.750 | 2.000 |
| 7/8 | 0.8750 | 0.895 | 0.852 | 1-5/16 | 1.312 | 1.269 | 1.856 | 1.742 | 19/32 | 0.620 | 0.568 | 0.06 | 0.02 | 2.000 | 2.250 |
| 1 | 1.0000 | 1.022 | 0.976 | 1-1/2 | 1.500 | 1.450 | 2.121 | 1.991 | 21/32 | 0.684 | 0.628 | 0.09 | 0.03 | 2.250 | 2.500 |
| 1-1/8 | 1.1250 | 1.149 | 1.098 | 1-11/16 | 1.688 | 1.631 | 2.386 | 2.239 | 3/4 | 0.780 | 0.720 | 0.09 | 0.03 | 2.500 | 2.750 |
| 1-1/4 | 1.2500 | 1.277 | 1.223 | 1-7/8 | 1.875 | 1.812 | 2.652 | 2.489 | 27/32 | 0.876 | 0.812 | 0.09 | 0.03 | 2.750 | 3.000 |
| 1-3/8 | 1.3750 | 1.404 | 1.345 | 2-1/16 | 2.062 | 1.994 | 2.917 | 2.738 | 29/32 | 0.940 | 0.872 | 0.09 | 0.03 | 3.000 | 3.250 |
| 1-1/2 | 1.5000 | 1.531 | 1.470 | 2-1/4 | 2.250 | 2.175 | 3.182 | 2.986 | 1 | 1.036 | 0.964 | 0.09 | 0.03 | 3.250 | 3.500 |
| See Paras. | 3.4,3.5 | 2.1.2 | 3.7 | ||||||||||||
| *Bolts shorter and/or smaller than those listed in the table shall have minimum thread lengths in accordance with American National Standard for Square and Hex Bolts and Screws, B18.2.1* | ||
| Diameters | Bolt length | Thread length |
|---|---|---|
|
4" up to less than 8" | 3" |
|
8" up to less than 12" | 4" |
|
12" and over | 6" |
| Industry | Specific Applications |
|---|---|
| Manufacturing | Used in heavy machinery assembly, ensuring stable connections for components in manufacturing processes. |
| Construction | Applied in building frames and structural constructions, providing secure fastening for beams, columns, and trusses. |
| Automotive | Utilized in vehicle assembly, securing components in engines, chassis, and suspension systems, ensuring stability in automotive applications. |
| Aerospace | Used in aircraft assembly, providing secure fastening for critical components in airframes and engines, meeting strict safety standards in aerospace engineering. |
| Marine | Applied in shipbuilding, securing various components and structures in marine vessels, ensuring stability and safety at sea. |
| Oil and Gas | Utilized in offshore platforms and refineries, providing robust fastening solutions for heavy equipment and structures in the oil and gas industry. |
| Telecommunications | Used in telecom tower assembly, securing antennas and satellite dishes, ensuring stability and strength in communication infrastructure. |
| Railway | Applied in railway tracks and signaling systems, ensuring secure connections and stability in railway infrastructure. |
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Square head machine bolts feature a distinctive square-shaped head and are designed for heavy-duty applications requiring high strength and durability. Unlike other bolts, their unique head design allows for easier gripping and torque application.
Square head machine bolts are commonly manufactured from materials such as carbon steel, stainless steel, and alloy steel. The choice of material depends on factors such as the application's environment, load requirements, and corrosion resistance.
Square head machine bolts find extensive use in industries such as construction, agriculture, automotive, and machinery manufacturing. They are preferred for applications requiring secure fastening and structural integrity.
Square head machine bolts are manufactured according to various international standards, including DIN, ASTM, ISO, and BS. These standards ensure uniformity in dimensions, material composition, and mechanical properties.
Choosing the correct size and length of square head machine bolts depends on factors such as the thickness of the materials being fastened, required load-bearing capacity, and assembly requirements. Our experts can assist you in selecting the appropriate bolts for your specific application.
Yes, GIC Fasteners offers customization services for square head machine bolts to accommodate unique project specifications. This includes variations in material, thread type, head size, and surface finishes.
Square head machine bolts offer several advantages, including increased torque transmission, improved resistance to loosening under vibration, enhanced gripping for manual tightening, and simplified maintenance and inspection.
Depending on the material selected, square head machine bolts can exhibit varying degrees of corrosion resistance. Stainless steel and coated bolts are particularly suitable for applications where corrosion is a concern.
Yes, square head machine bolts made from heat-resistant materials such as alloy steel or those with specialized coatings can withstand high-temperature environments commonly found in industrial settings.
