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Heavy Hex Structural Bolt

Heavy hex structural bolts are designed for steel-to-steel connections and include ASTM A325 and A490 specifications, which covers bolts from 1/2” up to 1-1/2” in diameter. Since these heavy hex bolts are intended for structural connections, they have shorter thread lengths than standard hex boltsHeavy Hex Bolts are designed for use in a variety of high temperature, high strength industrial applications, such as with steel fabrication and general construction. They feature a thicker head than standard or regular hex bolts, and offer a greater bearing surface that distributes the clamping load over a wider area.


Size Range
Diameter Metric : M16 to M36
Inch: 0.6 " to 1.4 "
Length Metric : 20 mm to 300 mm
Inch: 7/8" to 12"
Technical Specifications



Thread Size d
p bref for length l
c
Ds
Dw
e

k'
r
s
z
Nom. Max.
Max.
Min.
Min.
Min.
Nom.
Man.
Min. Min.
Min.
Max.Min.
Max.
M16 2 31 0.8 16.70 15.30 24.9 29.56 10 10.75 9.25 6.5 0.6 27 26.16 3
M20 2.5 36 0.8 20.84 19.16 31.4 37.29 12.5 13.40 11.60 8.1 0.8 34 33 3.8
(M22) 2.5 38 0.8 22.84 21.16 33.3 39.55 14 14.90 13.10 9.2 0.8 36 35 3.8
M24 3 41 0.8 24.84 23.16 38.0 45.20 15 15.90 14.10 9.9 1.0 41 40 4.5
(M27) 3 44 0.8 27.84 26.16 42.8 50.85 17 17.90 16.10 11.3 1.2 46 45 4.5
M30 3.5 49 0.8 30.84 29.16 46.5 55.37 18.7 19.75 17.65 12.4 1.2 50 49 5.3
M36 4 56 0.8 37.00 35.00 55.9 66.44 22.5 23.55 21.45 15.0 1.5 60 58.8 6


Tensile Strength Size Range Equivalent Standards
Property Class Diameter Length
PSI N/mm2 Grade Metric Inch Metric Inch IS ISO DIN BS ANSI JIS
60000 to 174000 400 to 1200 4.6 to 12.9 M16 to M36 0.6 " to 1.4 " 20 mm to 300 mm 0.8 " to 0.5 " 3757 7412 6914 4395 B18.2.3.7M B18.2.4.6M B1186


Heavy Hex Structural Bolt: An Essential Component for Robust Construction


Heavy hex structural bolts are integral to the construction and engineering industries, designed to provide exceptional strength and durability for heavy-duty applications. These bolts, characterized by their large, hexagonal heads and high tensile strength, are used to secure structural components in critical applications where safety and stability are paramount. At Pankaj International, a leading fastener manufacturer based in Ludhiana, we produce heavy hex structural bolts that meet stringent industry standards, ensuring reliability and performance in even the most demanding environments.


Unmatched Strength and Stability


The heavy hex structural bolt is engineered to handle substantial loads and stresses, making it ideal for use in large-scale construction projects, including bridges, high-rise buildings, and industrial structures. The larger hexagonal head design provides increased surface area for tightening, allowing for higher torque applications and ensuring a secure fit. This design feature is crucial in applications where the bolts must withstand heavy loads, dynamic forces, and potential vibrations. At Pankaj International, our heavy hex structural bolts are manufactured to deliver the high strength and stability required for these critical applications, ensuring the structural integrity of your projects.


Superior Durability and Corrosion Resistance


Durability is a key consideration for heavy hex structural bolts, and our products are crafted from high-quality materials such as alloy steel and carbon steel, which offer superior strength and resistance to wear. To enhance their performance in harsh environments, our bolts are available with various protective coatings, including hot-dip galvanization and zinc plating. These coatings provide excellent resistance to corrosion, making our heavy hex structural bolts suitable for use in outdoor and marine environments where exposure to moisture and other corrosive elements is a concern. This ensures a long service life and reduces the need for frequent replacements or maintenance.


Conclusion


Heavy hex structural bolts are essential for ensuring the strength and stability of large-scale construction and engineering projects. Their robust design and high tensile strength make them ideal for applications where reliability and durability are critical. At Pankaj International, we are dedicated to producing heavy hex structural bolts that meet the highest standards of quality and performance. Whether you are involved in bridge construction, building high-rise structures, or undertaking industrial projects, our bolts provide the secure fastening solutions you need. Contact us today to learn more about our range of fasteners and how we can assist with your specific requirements.

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Pankaj International is an ISO Certified Nationwide Manufacturer of Stocked and Custom Nuts, Bolts and Fasteners

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