Bridges & Structures

Bridges & Structures

Pankaj International supplies advanced fastening solutions like Huck Bolts and High Strength Friction Grip (HSFG) bolts, essential for the construction and safety of bridges and structures.

Pankaj International is a leading provider of Lock Bolts and High Strength Friction Grip (HSFG) bolts, playing a vital role in modern bridge construction. Traditionally, rivets were used in steel girders for railway and highway bridges, but with advancements in technology, HSFG bolts have replaced them due to their superior strength and ease of installation. These high-strength bolts provide the necessary tension to ensure structural integrity, making them an ideal choice for bridge construction. Pankaj International's top-quality fastening products are designed to meet the stringent demands of the construction industry, ensuring the reliability and durability of bridges and large structures worldwide.

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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.

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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"

Hex Head Bolt

Hex Head Bolts are versatile, high-performance fasteners designed to deliver exceptional strength and durability across a variety of applications. With a distinctive six-sided head for easy wrenching, these bolts are ideal for construction, manufacturing, and industrial projects. Manufactured from high-tensile steel, they offer resistance to corrosion, ensuring longevity even in harsh environments. Trusted for their reliability and compliance with standards like DIN and ISO , Pankaj International stands as the best fastener manufacturer in India, providing premium solutions for all fastening needs.

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Size Range
Diameter

Metric : M10 to M56
Inch : 0.4 "to 2.2 "

Length

Metric: 20 mm to 300 mm
Inch : 7/8" to 12"

Hex Head Screw

The Hex Head Screw is a versatile and durable fastener with a hexagonal-shaped head, ensuring easy installation and removal using a wrench or socket tool. Designed for high-strength applications, these screws are ideal for construction, automotive, and industrial projects. With options in zinc-coated, galvanized, and stainless steel finishes, they provide excellent resistance to corrosion. At Pankaj International, we manufacture Hex Head Screws to meet global standards like DIN and ISO, delivering quality fasteners for demanding environments.

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Size Range
Diameter

Metric: M8 to M52
Inch: 0.3 “ to 2 "

Length

Metric: 20 mm to 300 mm
Inch: 7/8" to 12

HSFG Bolt Assembly

The HSFG Bolt Assembly (High-Strength Friction Grip) is designed for applications requiring high load-bearing capacity and precision in structural connections. These assemblies include a bolt, nut, and washer, ensuring reliable friction-based fastening without relying on thread shear. Widely used in bridges, steel frameworks, and industrial plants, they comply with global standards like DIN and ISO. At Pankaj International, we deliver customized HSFG Bolt Assemblies engineered for heavy-duty construction projects worldwide.

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Size Range
Diameter

Metric: M12 - M36

Length

length upto 10

Round Head Rivit

Round Head Rivets are reliable and versatile fasteners widely used in industries requiring robust joint strength. Manufactured by Pankaj International, these rivets deliver excellent shear and tensile performance, making them ideal for heavy-duty applications. Built to withstand extreme environments, they are crafted from stainless steel, carbon steel, and aluminum alloys. Perfect for railways, bridges, marine structures, and industrial machinery, round head rivets ensure durability, secure connections, and long-lasting results.

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Size Range
Diameter

1/4 " to 3/4 "

Length

10 mm to 500 mm

Welding Shear Connecting Stud

The Welding Shear Connecting Stud is a specialized fastener used to create strong, load-bearing connections in composite construction applications. Designed for seamless integration with steel and concrete, these studs are critical in ensuring shear resistance in bridges, buildings, and industrial structures. At Pankaj International, our Welding Shear Connecting Studs are precision-engineered for durability, compatibility with automated welding systems, and compliance with standards like EN ISO and AWS D1.1.

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Size Range
Diameter

Metric: M10 to M25
Inch : 0.4 " to 1 "

Length

Length upto 10"

PI Hydraulic Powerpack

The PI Hydraulic Powerpack from Pankaj International is an advanced, high-performance solution engineered to power PI lockbolt installation tools. Designed for efficiency and reliability, this compact yet robust unit ensures smooth operation for various industrial fastening applications. Built with precision, the powerpack offers consistent hydraulic pressure, minimizing operational downtime while maximizing productivity. Its user-friendly controls and durable components make it a preferred choice for demanding environments like manufacturing plants and heavy machinery assembly lines.

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Size Range
Diameter

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PI Large Diameter Lockbolt Large Truss Head

The PI Large Diameter Lock Bolt Large Truss Head is a high-strength fastener designed for heavy-duty applications across construction, marine, and aerospace industries. Its distinctive large truss head provides exceptional holding power and enhanced load distribution, making it ideal for critical projects. Manufactured by Pankaj International, the best fastener manufacturer in India, this PI lockbolt delivers reliability, durability, and compliance with ISO,  BS , DIN ANSI & JIS ensuring exceptional performance in even the most demanding environments.

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Flange Nut

A flange nut is a specialized fastener featuring an integrated flange that acts as a built-in washer. This design distributes the clamping load over a wider area, reducing the risk of damage to the material being fastened. Flange nuts are commonly used in various industries and applications where vibration resistance, secure fastening, and ease of installation are crucial. They are particularly beneficial in applications where a flat washer would be difficult to install or where space constraints exist. By eliminating the need for a separate washer, flange nuts streamline the fastening process, saving time and reducing the number of components required. Their versatility and efficiency make them a preferred choice in many mechanical and structural applications.

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Size Range
Diameter

Metric: M5 to M20
Inch: 0.2 " to 0.8 "

Length

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Heavy Hex Nut

A heavy hex nut is a six-sided internally threaded fastener that is both wider and thicker than the same-sized finished hex nut. This design provides increased strength and bearing surface area, making heavy hex nuts ideal for large diameter and high-strength bolt applications. They are commonly used in structural and heavy-duty applications where enhanced load-bearing capacity is essential. Heavy hex nuts are available in various grades, including ASTM A563 Grade DH, ASTM A194 Grade 2H, and ASTM F594, each offering specific mechanical properties to suit different requirements. These nuts are typically used with bolts of the same grade to ensure compatibility and optimal performance. The heavy hex nut's robust construction ensures secure and reliable fastening in demanding environments.

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Size Range
Diameter

Metric: M4 to M80
Inch: 1/2" to 3"

Length

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Hex Nut

A hex nut is a six-sided internally threaded fastener designed to secure components by threading onto a bolt or screw. Its hexagonal shape allows for easy tightening with standard wrenches or sockets. Hex nuts are widely used in construction, machinery, and automotive applications due to their versatility and reliability. They come in various grades, such as Grade 2, Grade 5, and Grade 8, each offering different mechanical properties to suit specific requirements. Common materials include carbon steel, stainless steel, and brass, providing options for corrosion resistance and strength. Hex nuts are available in both standard and metric sizes, accommodating a wide range of bolt dimensions. Their straightforward design and ease of use make them a staple in fastening solutions across multiple industries.

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Size Range
Diameter

Metric: M6 to M72
Inch: 0.2 " to 2.8 "

Length

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Jam Nut

A jam nut is a specialized fastener designed to prevent loosening and maintain the integrity of threaded connections. Typically used in combination with a standard nut, the jam nut is tightened against the regular nut to secure the fastened parts in place. This two-nut system provides an added layer of security, preventing the main nut from loosening due to vibration or other external forces. Jam nuts are commonly used in automotive, machinery, and construction applications, where secure and reliable fastening is critical. Made from various materials like steel, stainless steel, and alloy, jam nuts offer durability and strength to withstand harsh environments. Their small size and cost-effective design make them a popular choice for numerous industries, ensuring tight and secure connections in a range of applications.

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Size Range
Diameter

Metric: M2 to M48
Inch: 0.1 " to 2"

Length

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Tension Control Bolt

Tension Control Bolts (TCBs) are high-strength fasteners used in structural steel applications, particularly for securing steel beams and other critical components in bridges, buildings, and industrial structures. Known for their reliability and ability to maintain the correct tension during installation, tension control bolts are an essential choice for safety and stability in construction projects. Manufactured to meet high tensile strength and durability requirements, these bolts are engineered to prevent loosening over time, making them ideal for applications requiring precision and long-term performance. At Pankaj International, we provide premium quality Tension Control Bolts and related products, including Tension Control Bolt Tables and detailed drawings to ensure accurate installation.

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Size Range
Diameter

M12 to M36

Length

75 mm to 200 mm

Direct Tension Indicator Washer

Direct Tension indicators(DTI Washers), also known as Auto Torque Indicators, are single-use mechanical load cells designed to indicate the magnitude of preload in the assembly, It shows if the bolt is properly tensioned, it is very useful while tensioning High Strength Structural bolts. Direct tension indicator washers (DTIs) are innovative fasteners designed to provide a visual indication of proper bolt tension. These washers feature protrusions that flatten as the bolt is tightened to the specified tension, ensuring accurate and reliable tensioning in structural and high-stress applications. Ideal for use in construction, bridges, and heavy machinery, DTIs enhance safety and performance by guaranteeing correct tension in critical assemblies. Made from high-quality materials, these washers offer excellent durability and resistance to wear and environmental conditions.

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Size Range
Diameter

Metric: M12 - M36

Length

Hardened Steel Washer

A hardened steel washer is a flat, disc-shaped component made from steel that has undergone a heat treatment process to increase its hardness and strength. This enhancement makes it ideal for applications where high tensile strength and resistance to wear are essential. Hardened steel washers are commonly used in heavy-duty machinery, automotive, and construction industries to distribute loads, reduce friction, and prevent damage to surfaces. They are available in various sizes and grades to accommodate different fastening requirements. The hardness of these washers ensures they maintain their shape and functionality under high-pressure conditions. Additionally, hardened steel washers are often coated or plated to provide corrosion resistance, extending their lifespan in harsh environments.

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Size Range
Diameter

Metric: M16 to M36
Inch: 0.6 " to 1.4 "

Length

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Plain Washer

A plain washer, also known as a flat washer, is a thin, flat, circular metal disc with a central hole. It is primarily used to distribute the load of a threaded fastener, such as a bolt or nut, over a larger surface area, thereby reducing stress and preventing damage to the material being fastened. Plain washers also help in preventing loosening of fasteners due to vibration and can act as spacers. They are commonly made from materials like steel, stainless steel, brass, and nylon, catering to various industrial, automotive, and household applications. Available in multiple sizes and thicknesses, plain washers are essential components in ensuring the longevity and reliability of mechanical assemblies.

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Size Range
Diameter

Metric: M8 to M52
Inch: 5/16" to 2"

Length

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Spring Lock Washer

A spring lock washer is a mechanical component designed to prevent the loosening of fasteners due to vibrations or dynamic loads. Its helical shape allows it to exert a continuous force against the fastener, maintaining tension and ensuring a secure connection. Commonly used in automotive, aerospace, and industrial applications, spring lock washers are essential for maintaining the integrity of bolted joints. They are typically made from high-carbon steel or stainless steel to provide durability and resistance to corrosion. Available in various sizes and grades, spring lock washers are compatible with a wide range of bolts and nuts, offering versatility in fastening solutions. Their design and material properties make them a reliable choice for preventing fastener loosening in critical applications.

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Size Range
Diameter

Metric: M8 to M30
Inch: 0.3 ” to 1.2 "

Length

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