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HSFG Bolt Assembly

HSFG (High Strength Friction Grip) bolt assemblies are engineered for high-stress structural connections. These bolts, combined with heavy hex nuts, conform to ASTM A563 or A194 standards to ensure superior strength and reliability. Ideal for steel-to-steel connections, HSFG bolts provide robust and secure fastening, distributing load evenly and resisting loosening under vibration. Perfect for use in construction, bridges, and heavy infrastructure projects, they guarantee long-lasting performance and safety.

Size Range
Diameter Metric: M12 - M36
Length length upto 10
Technical Specifications


Dia. p s e c r k
Max. Min. Min. Max. Min. Min. Max. Min.
M12 1.75 22.00 21.16 23.91 0.6 0.4 1.2 8.45 7.55
M16 2.00 27.00 26.16 29.56 0.6 0.4 1.2 10.75 9.25
M20 2.50 32.00 31.00 35.03 0.8 0.4 1.5 13.90 12.10
M22 2.50 36.00 35.00 39.55 0.8 0.4 1.5 14.90 13.10
M24 3.00 41.00 40.00 45.20 0.8 0.4 1.5 15.90 14.10
M27 3.00 46.00 45.00 50.85 0.8 0.4 2.0 17.90 16.10
M30 3.50 50.00 49.00 55.37 0.8 0.4 2.0 20.05 17.95
M36 4.00 60.00 58.80 66.44 0.8 0.4 2.0 24.05 21.95

Proof Load Size Range Equivalent Standards
Property Class Diameter Length
PSI N/mm2 Grade Metric Inch Metric Inch IS ISO DIN BS ANSI JIS
74000 to 174000 510 to 1200 4 to 12 M12 to M36 0.5“ to 1.4 " - - - - - - - -



Introduction to HSFG Bolt Assembly


High Strength Friction Grip (HSFG) bolts are a crucial component in the construction industry, known for their exceptional strength and reliability. These bolts are designed to create a frictional grip between joined parts, ensuring a secure and stable connection. HSFG bolts are widely used in steel structures, bridges, and heavy-duty applications where high tensile strength is required. At Pankaj International, a leading fastener manufacturer in Ludhiana, we specialize in producing the best fasteners, including HSFG bolts, that meet the highest standards of quality and performance.


Manufacturing Excellence at Pankaj International


As one of the best fasteners manufacturers, Pankaj International leverages advanced cold forging techniques to produce high tensile bolts and nuts that are both durable and reliable. Our state-of-the-art facilities in Ludhiana are equipped with the latest technology to ensure precision and consistency in every product we manufacture. Whether you need cap screws, bolt and screw assemblies, or stainless steel bolts, we provide fasteners that meet your specific requirements. Our commitment to excellence makes us a top choice for fasteners near you.


Features and Benefits of HSFG Bolts


HSFG bolts are designed to provide superior performance in high-stress environments. The key features of these bolts include:


  • High Tensile Strength: Made from high-grade materials, our HSFG bolts can withstand extreme loads and stresses.
  • Enhanced Grip: The friction grip mechanism ensures a tight and secure fit, reducing the risk of loosening over time.
  • Corrosion Resistance: Our stainless steel bolts offer excellent resistance to corrosion, making them ideal for outdoor and marine applications.
  • Versatility: Suitable for a wide range of applications, from construction projects to industrial machinery.

At Pankaj International, we ensure that each HSFG bolt assembly is meticulously crafted to deliver these benefits, providing our clients with fasteners they can trust.


Applications of HSFG Bolts


HSFG bolts are indispensable in various industries due to their robust performance. Common applications include:


  • Construction: Used in steel frameworks and bridges, ensuring structural integrity and safety.
  • Industrial Machinery: Providing reliable connections in heavy machinery and equipment.
  • Infrastructure Projects: Essential for the assembly of large structures such as towers and pipelines.

By choosing Pankaj International as your fastener manufacturer, you gain access to a wide range of high tensile nuts and bolts tailored for these demanding applications.


Why Choose Pankaj International for Your Fastener Needs?


Pankaj International stands out as a premier fasteners company in India due to our unwavering dedication to quality and customer satisfaction. Our extensive experience in bolt manufacturing in India, combined with our innovative manufacturing processes, positions us as a leader in the fastener industry. We understand the critical role that fasteners play in your projects, which is why we strive to deliver products that exceed expectations.

Whether you're looking for HSFG bolts, cap screws, or any other type of fastener, Pankaj International offers a comprehensive range of solutions designed to meet your needs. 

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

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