HSFG BOLT

Short Description

Brand:- Caparo or any general.

High Strength Friction Grip bolts work on a principle that's a little different from most fasteners. Instead of relying purely on shear strength to hold a joint together, HSFG bolts are tightened to a specific torque that clamps the connected plates so tightly together that friction between the surfaces does most of the work. This clamping action reduces slip in the joint and helps the connection handle heavy, repeated, or dynamic loads without loosening over time. Because of this, HSFG bolts are a common choice in structural steel work, particularly in projects like bridges and high-rise buildings where joint movement simply isn't an option. They're paired with hardened washers and nuts to maintain that clamping force consistently across the assembly.

Material: High Tensile Alloy Steel
Grades: 8.8S and 10.9S, as per structural bolt classifications
Thread Type: Metric coarse threads as standard
Size Range: M12 to M36, with other sizes made to order
Washer Type: Hardened flat washers included as standard practice
Surface Finish: Black, Zinc Plated, or Hot Dip Galvanized
Standards: IS 3757, IS 4000, ASTM A325, and other applicable specifications

Key Features

Designed for friction grip rather than shear-only load transfer
Tightened to a specified torque for consistent clamping force
Manufactured from high tensile strength steel
Paired with hardened washers for even load distribution
Reduces slip and movement in bolted steel connections
Suitable for both static and dynamic structural loads
Available with black, galvanized, or other protective finishes
Manufactured to strict dimensional and strength standards

Applications of HSFG Bolt

Steel bridge construction
High-rise building frameworks
Industrial sheds and warehouse structures
Transmission towers and electrical infrastructure
Railway and metro rail structures
Offshore and marine platforms
Stadium and large-span roof structures
Heavy equipment support structures
Pre-engineered building assemblies
Structural steel fabrication projects

Advantages of HSFG Bolt

Provides strong resistance to joint slip under load
Handles dynamic and vibration-prone loads effectively
Distributes clamping force evenly across the connection
Reduces the risk of loosening in long-term structural use
Suitable for connections exposed to fluctuating stress
Supports safer, more stable structural assemblies

Why Choose Genuine Enterprises?

Genuine Enterprises supplies HSFG bolts manufactured to meet the demands of structural steel projects where connection strength cannot be compromised. Each batch is checked for tensile grade, dimensional accuracy, and finish consistency before it reaches our customers.

We've worked alongside fabricators, contractors, and engineering firms as one of the established hsfg bolts suppliers in the industry, and this experience has shaped how we approach quality control and order fulfillment. As a growing hsfg bolts supplier in India, we focus on timely delivery and correct specification matching, especially for large structural projects with strict deadlines.

1.What does HSFG stand for?
HSFG stands for High Strength Friction Grip, referring to the way these bolts use clamping friction between plates to transfer load rather than relying only on the bolt's shear strength.

2. Where are HSFG bolts commonly used?
They're widely used in structural steel work such as bridges, high-rise buildings, transmission towers, and other projects where joint stability under load is critical.

3. Why are hardened washers used with HSFG bolts?
Hardened washers help distribute the clamping force evenly across the connected surfaces and prevent the nut or bolt head from digging into the steel plates during tightening.

4. What grades are HSFG bolts typically available in?
HSFG bolts are commonly available in 8.8S and 10.9S grades, which indicate their tensile strength and suitability for different structural loads.

5. How is torque controlled when tightening HSFG bolts?
Torque is applied using calibrated tools to reach the specified clamping force, ensuring the friction grip performs as intended once the structure is under load.