Zoomed Image ×

Heavy Hex Structural Bolt

Heavy Hex Structural Bolts are the backbone of large-scale construction and industrial projects, providing unmatched durability and strength for critical connections. With a wider hexagonal head for increased clamping force, these bolts excel in securing steel-to-steel connections in bridges, buildings, and infrastructure projects. Crafted with high-tensile steel, coated with corrosion-resistant finishes, and compliant with global standards like ASTM and DIN these bolts are engineered for precision and reliability. Choose Pankaj International, the best fastener manufacturer in India, for bolts that guarantee performance under pressure.

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


1. Unparalleled Strength for Heavy-Duty Applications


When you’re dealing with high-stress structures, ordinary fasteners just won’t cut it. Heavy Hex Structural Bolts are specifically designed for high-tensile connections, delivering the clamping force needed for structural steel assemblies. These bolts are used in bridges, railways, and industrial plants, where safety and durability are paramount. Their larger hex head ensures an even distribution of pressure, making them indispensable for critical applications.


2. Engineered to Meet International Standards


Precision and compliance are at the heart of our Heavy Hex Structural Bolts. Manufactured to meet or exceed standards like ASTM , DIN , and BS , these bolts ensure seamless integration into global projects. Whether you’re constructing a high-rise building, a wind turbine, or an oil refinery, these bolts offer reliability you can count on. At Pankaj International, we uphold a reputation for delivering fasteners that meet the toughest industry requirements.


3. Superior Materials for Longevity


Crafted from high-tensile steel and treated with zinc coatings or hot-dip galvanization, these bolts resist wear, tear, and corrosion in even the harshest environments. They’re perfect for applications requiring weather-resistant fasteners, including marine-grade projects, coastal infrastructure, and renewable energy installations like wind turbines. Each bolt undergoes rigorous quality checks to ensure consistent performance, no matter the conditions.


4. Versatility Across Industries


The versatility of Heavy Hex Structural Bolts extends far beyond construction. They are widely used in aerospace, automotive, and heavy machinery industries due to their exceptional load-bearing capacity. Additionally, they’re a top choice for fasteners for bridges, mining equipment, and transport vehicles. Their adaptability makes them a preferred solution for projects that demand strength and reliability.


5. Innovation with Pankaj International


At Pankaj International, our commitment to innovation sets us apart as the best fastener manufacturer in India. We specialize in creating customized fastening solutions, ensuring every project gets the exact specifications it needs. Whether you’re looking for eco-friendly fasteners, precision-engineered bolts, or ISO-certified fasteners, we’ve got you covered. With a focus on timely delivery and unmatched service, we’re the trusted partner for your most challenging projects.


6. Designed for Performance and Safety


Safety is non-negotiable when it comes to structural fasteners, and our Heavy Hex Bolts are designed to withstand extreme tensile loads, providing the peace of mind you need. Their corrosion-resistant finishes, coupled with advanced manufacturing processes, make them the ideal choice for seismic applications, vibration-resistant structures, and heavy machinery installations.

Similar Products

More Product Range

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

pankajinternational