Construction & Roadways

Construction & Roadways

Pankaj International, the best fastener manufacturer in the world, provides a comprehensive range of high-quality fasteners and hardware for road construction, including guardrails and crash barriers.

Pankaj International, recognized as the best fastener manufacturer in the world, delivers essential fasteners and hardware for the construction and maintenance of roadways. Our extensive product range includes high-quality fasteners for guardrails and crash barriers, crucial for enhancing road safety and minimizing accident severity. Designed to withstand constant vibrations and harsh conditions, our fastening solutions ensure the reliability and durability of safety features on roads and highways. With Pankaj International, you can trust that your road construction projects are supported by top-tier products that meet the highest standards of performance and safety.

We manufacture the complete range of hardware and fasteners for all types of guard rails and crash barriers.

Recommended products for the industry

Carriage Bolt

Carriage bolts are integral components in various construction and industrial applications. Known for their unique rounded heads and smooth, square necks, these bolts are specifically designed to prevent rotation when installed. They are widely used for securing wood to metal, making them a preferred choice in structural projects and heavy-duty assemblies. The square neck under the head of the bolt locks the bolt in place, ensuring it remains stationary as the nut is tightened. Carriage bolts are ideal for applications where high tensile strength and resistance to loosening are crucial. Manufactured from high-quality stainless steel or carbon steel, these bolts offer impressive durability and strength, making them a reliable fastening solution in construction, automotive, and heavy machinery industries. The versatility of carriage bolts makes them suitable for a variety of uses, including securing metal plates, wooden beams, and structural components in bridges, railways, and buildings. Whether used in industrial fasteners or as part of a heavy-duty fastening system, these bolts provide excellent performance even under extreme conditions. Their ability to resist corrosion and their excellent load-bearing capacity further elevate their status as one of the most trusted fastening options. Carriage bolts are designed to meet various international standards such as DIN, ASTM, and ISO, ensuring they offer the quality and precision required for industrial use.

Size Range
Diameter

M5 to M16
0.2 " to 0.6 "

Length

20 mm to 200 mm 1" to 8"

Fish Bolt

Fish bolts are a vital component in fastening systems, widely used in industries like railways, mining, and construction. Manufactured with high-tensile strength and precision, these bolts ensure seamless fastening solutions for heavy-duty applications. Fish bolts from Pankaj International, a largest bolt company, are available in various finishes, including zinc-coated bolts and galvanized screws, for durability and corrosion resistance. With compliance to ISO-certified bolts, DIN 933 bolts, and GOST standards for Russia, these fasteners are perfect for demanding environments, from renewable energy projects to structural steel installations. Contact us for affordable bolts and screws or explore custom screw manufacturing options.

Size Range
Diameter

M10 to M22

Length

4" to 12"

Guard Rail Bolt/Crash Barrier Bolt

Guard Rail Bolts, also known as Crash Barrier Bolts, are the unsung heroes of road safety. Designed to firmly secure metal barriers, these bolts play a critical role in preventing accidents by keeping guard rails intact during high-impact scenarios. Manufactured with precision and durability, these bolts are crafted to meet international standards, including EN and ISO, ensuring maximum safety on highways, bridges, and industrial zones. At Pankaj International, we don’t just make fasteners—we engineer trust and safety into every bolt.

Size Range
Diameter

Metric: M8 to M20
Inch: 5/16" to 3/4"

Length

Metric: 20 mm to 300 mm
Inch: 1" to 8"

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"

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.

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.

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.

Size Range
Diameter

Metric: M12 - M36

Length

length upto 10

Shank Studs

Shank Studs are precision-engineered fasteners designed for diverse industrial applications. Manufactured by Pankaj International, these versatile fasteners deliver high tensile strength, exceptional durability, and resistance to harsh environmental conditions. Ideal for structural, automotive, and marine projects, shank studs ensure secure fastening with consistent performance. Crafted from premium materials and adhering to DIN, ISO, and GOST standards, these stainless steel fasteners provide unmatched reliability across construction, heavy machinery, and vibration-resistant applications.

Size Range
Diameter

1/4 " to 2 "

Length

25 mm to 500 mm

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.

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.

Size Range
Diameter

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

Length

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Button Head Socket screw

Button Head Socket Screws are premium-grade fasteners known for their low-profile and aesthetically pleasing rounded heads. Designed for a wide range of industrial applications, these screws offer excellent strength, durability, and precision. Crafted to meet stringent industry standards, Button Head Socket Screws by Pankaj International deliver unmatched performance and reliability. Detailed size charts, drawings, and images are available, ensuring effortless selection and application.

Size Range
Diameter

M3 to M16

Length

50mm to 175mm

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.

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.

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.

Size Range
Diameter

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

Length

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