Railways & Mobility
Railways & Mobility

Since the industrial revolution, railways have been essential to industrial growth, evolving from steam locomotives to modern high-speed trains exceeding 300 km/h (175 mph)

Pankaj International, the largest supplier to the railway industry, provides top-quality lock bolts and fastener products that ensure the reliability and safety of modern railways. Our advanced fastening solutions are designed to withstand the intense vibrations and strains experienced by high-speed trains, making us a trusted partner in maintaining secure and efficient railway networks worldwide. With a commitment to excellence, Pankaj International delivers the best fastening products, essential for the evolving demands of today’s railways.

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Recommended products for the industry

Carriage Bolt

There are specially designed types of bolts for these applications which are termed carriage bolts. Earlier in the 1800s, these bolts were used in the construction of carriages and their wheels. That is where they get their name. These bolts come in various styles and head and neck shapes. Explore high-quality carriage bolts from Pankaj International, a leading fasteners manufacturer in Ludhiana, India. Our carriage bolts, with unique head and neck shapes, are perfect for secure fastening in various applications. Discover our range of high tensile bolts, nuts, screws, and washers.

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Size Range
Diameter

M5 to M16
0.2 " to 0.6 "

Length

20 mm to 200 mm 1" to 8"

Fish Bolt

A fish plate, splice bar or joint bar is a metal connecting plate used to bolt the ends of two rails into a continuous track . Fish bolt is the fastener used on this plates for jointing. Fish bolts are essential fasteners used with fish plates, splice bars, or joint bars to connect the ends of two rails into a continuous track. Designed for durability and precision, fish bolts ensure secure jointing in rail systems, making them crucial for maintaining track integrity. As a leading fasteners manufacturer in Ludhiana, India, Pankaj International offers high-quality fish bolts, tailored for robust rail connections. Explore our extensive range of high tensile bolts, nuts, screws, and washers for all your industrial needs.


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Size Range
Diameter

M10 to M22

Length

4" to 12"

Foundation Bolts

A foundation bolt is a steel product in the form of a rod with a threaded part; consists of a metal rod and a special device that holds the foundation bolt inside the foundation. It is used for fastening structures in the construction of residential buildings, industrial buildings, roads, etc.  Foundation bolts from Pankaj International are essential steel components designed for securing structures in various construction projects. Featuring a threaded rod and a specialized device to anchor the bolt within the foundation, these bolts are crucial for stabilizing residential buildings, industrial structures, and road constructions. As a leading fasteners manufacturer in Ludhiana, India, Pankaj International provides high-quality foundation bolts, engineered for strength and reliability. Explore our comprehensive range of high tensile bolts, nuts, screws, and washers for all your construction needs.

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Size Range
Diameter

M10 to M48

Length

6" to 48"

Guard Rail Bolt/Crash Barrier Bolt

These Fasteners are mainly used in installation of road crash barriers /guard rail at the roads sides and turning points of roads to safeguard the fatal accidents and safety of vehicles. Guard rail bolts, also known as crash barrier bolts, are essential fasteners used in the installation of road crash barriers and guard rails at roadside locations and turning points. Designed to enhance safety and prevent accidents, these robust bolts ensure secure and reliable barrier installation.  As a leading fasteners manufacturer in Ludhiana, India, Pankaj International offers high-quality guard rail bolts, engineered for durability and performance in critical safety applications. Explore our comprehensive range of high tensile bolts, nuts, screws, and washers.


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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 designed for steel-to-steel connections and include ASTM A325 and A490 specifications, which covers bolts from 1/2” up to 1-1/2” in diameter. Since these heavy hex bolts are intended for structural connections, they have shorter thread lengths than standard hex bolts. Heavy Hex Bolts are designed for use in a variety of high temperature, high strength industrial applications, such as with steel fabrication and general construction. They feature a thicker head than standard or regular hex bolts, and offer a greater bearing surface that distributes the clamping load over a wider area.


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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

As the name implies, these bolts feature a hexagonal head or a hex head, that is suitable for tightening with a wrench or socket. A hex bolt may be fully threaded or may feature an unthreaded shoulder. Hex bolts are often used to fasten wood to wood, metal to wood, or metal to metal

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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

Hex Cap Screws are fasteners featuring a hexagonal, six-sided, head with a washer face on the bearing surface and a chamfered point. Commonly used in construction and machine assemblies, hex cap screws are one of the most common fasteners used on the jobsite today.

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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

Hexagon Flange Bolt

Hex Flange Bolts are regular hex head bolts with built-in washer and externally threaded body. Flange bolts comes with plain or serrated flange configuration. Hexagon flange bolts, flange bolts, frame bolts are other alias of hex flange bolts. Hexagon flange bolts are versatile fasteners featuring a hexagonal head with an integrated flange that acts as a washer. This design enhances load distribution and minimizes the risk of loosening due to vibration. Ideal for automotive, construction, and machinery applications, these bolts offer exceptional stability and durability. The flange also eliminates the need for separate washers, streamlining installation and ensuring a secure and reliable connection.

 

 

 

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Size Range
Diameter

M5 to M20

Length

20 mm to 200 mm

High Tensile Track Shoe bolt

High tensile track shoe bolts from Pankaj International are engineered for exceptional strength, toughness, and wear resistance in off-road machinery track applications. Manufactured from alloy steel and heat-treated to 170,000 psi or 150,000 psi, these bolts ensure durability and reliability under demanding conditions. As a leading fasteners manufacturer in Ludhiana, India, Pankaj International offers a comprehensive range of high tensile bolts, nuts, screws, and washers, tailored for various industrial needs.





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Size Range
Diameter

Metric: M16 to M42
Inch: 5/16" to 2"

Length

Metric: 20 mm to 200 mm
Inch: 1" to 8"

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.

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Size Range
Diameter

Metric: M12 - M36

Length

length upto 10

Round Head Rivit

A rivet is a permanent mechanical fastener. Before being installed, a rivet consists of a smooth cylindrical shaft with a head on one end. The end opposite to the head is called the tail. On installation, the rivet is placed in a punched or drilled hole, and the tail is upset, or bucked (i.e., deformed), so that it expands to about 1.5 times the original shaft diameter, holding the rivet in place .  Round head rivets from Pankaj International are permanent mechanical fasteners designed for robust and secure connections. Featuring a smooth cylindrical shaft with a head on one end and a tail on the other, these rivets are installed by placing them into a punched or drilled hole and then deforming the tail to expand approximately 1.5 times its original diameter, ensuring a strong hold. Ideal for various industrial and construction applications, Pankaj International provides high-quality round head rivets, engineered for durability and reliability. Explore our range of high tensile bolts, nuts, screws, and washers.

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Size Range
Diameter

1/4 " to 3/4 "

Length

10 mm to 500 mm

Socket Head Cap Screw

Socket cap screws are machine screws with a cylindrical barrel shaped head containing a hexagonal socket. The head has a smaller diameter than most other machine screw heads, typically just 1.5 times the nominal thread diameter. Socket cap screws may also be referred to as a socket head cap screw, a cap head socket screw or hex socket head screw.

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Size Range
Diameter

Metric: M6 to M42
Inch: 5/16" to 2"

Length

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

Square Head Bolt

Square Head Bolts are similar to Hex Cap screws but have a 4-sided square head instead of a 6-sided hexagonal head.They are commonly referred to as both bolts and screws and are designed to be driven with a wrench. Square Head Bolts are partially threaded with a shoulder beneath the head. Square head bolts from Pankaj International offer a robust alternative to hex cap screws, featuring a 4-sided square head for secure driving with a wrench. Unlike their hexagonal counterparts, these bolts are partially threaded with a shoulder beneath the head, making them ideal for various applications. Commonly referred to as both bolts and screws, our square head bolts are engineered for durability and precision. As a leading fasteners manufacturer in Ludhiana, India, Pankaj International provides a wide range of high tensile bolts, nuts, screws, and washers.




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Welding Shear Connecting Stud

Welding Shear Connecting Stud is a highly reliable fastening method for a wide variety of applications. The process can quickly weld almost any size or configuration of metal stud to a workpiece, with maximum weld penetration and reliability. Arc stud welding creates strong, one-sided welds on base metals as thin as 0.048 inch.
Welding shear connecting studs from Pankaj International offer a dependable fastening solution for various applications. This method enables the rapid welding of metal studs of nearly any size or configuration to a workpiece, ensuring maximum weld penetration and reliability. Arc stud welding creates robust, one-sided welds on base metals as thin as 0.048 inches. As a leading fasteners manufacturer in India, Pankaj International provides high-quality welding shear connecting studs, engineered for durability and strength in diverse industrial settings

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Size Range
Diameter

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

Length

Length upto 10"

Collar-Flanged

Collar-Flanged are precision-engineered fastening components featuring an extended flange for increased holding power and stability. Ideal for applications requiring robust alignment and positioning, these collars are commonly used in automotive, industrial machinery, and equipment assembly. The flange design provides additional surface area, distributing clamping force evenly and preventing slippage. Flange type collars are essential for ensuring secure, reliable connections in high-stress environments.

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Collars-Standard

Standard collars are versatile fastening components designed to provide a secure grip and positioning on shafts, rods, and other cylindrical objects. These collars are typically used in various mechanical applications, including automotive, industrial machinery, and equipment assembly. With a simple yet robust design, standard collars ensure reliable performance and easy installation, offering a cost-effective solution for maintaining alignment and preventing component movement.

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Hydraulic Powerpack

Pankaj International provides advanced hydraulic power rigs designed for efficient and powerful operation in various industrial applications. Our hydraulic power rigs are engineered for durability, precision, and high performance, making them ideal for demanding tasks. As a trusted manufacturer and supplier in Ludhiana, India, we offer robust solutions tailored to meet the specific needs of our clients.

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Installation Tools

Pankaj International offers a wide range of installation tools designed for precision and ease of use in fastening applications. Our high-quality tools are ideal for installing various fasteners, including lock bolts, HuckBolt, hex bolts, and other components. As a leading manufacturer and supplier in Ludhiana, India, we provide durable and reliable tools to ensure efficient installation processes.

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Large Diameter Lock bolt Round Head

 Large Diameter Lock bolt round head fasteners are specialized components designed for secure and permanent connections. Featuring a round head, these lock bolts are ideal for high-vibration environments, providing a strong, tamper-resistant fastening solution. Used widely in automotive, aerospace, and industrial applications, lock bolts offer superior shear and tensile strength, ensuring reliable and long-lasting connections. Their installation is quick and efficient, making them perfect for large-scale production and assembly lines.




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Large Diameter Lock bolt Large Truss Head

Large Diameter Lock bolt Large truss head fasteners are designed for secure, permanent connections, featuring a broad, low-profile truss head for enhanced holding power. These lock bolts are ideal for applications requiring high shear and tensile strength, such as in automotive, aerospace, and industrial sectors. The truss head design distributes the load over a wider area, making them perfect for use with thin materials and in high-vibration environments. Easy to install, lock bolt Large truss head fasteners provide durable and reliable connections.

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Nose Assembly and Parts

Our Nose Assembly and Parts are engineered to provide optimal performance and durability for various applications. Designed with precision, these components ensure a perfect fit and reliable function, meeting the stringent standards of the aerospace and defense industries. Whether you need custom solutions or standard parts, our nose assemblies are crafted from high-quality materials and subjected to rigorous quality control processes. Trust in our expertise and experience to deliver parts that enhance the efficiency and safety of your equipment.



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SD Lock bolt CSK Head

SD Loc kbolt Pins with a CSK (countersunk) head are engineered for applications requiring a flush finish and high-strength fastening. These fasteners are designed to provide a smooth, unobtrusive appearance while offering excellent shear and tensile strength. The CSK head design ensures the pin sits flush with the surface, making them ideal for use in automotive, aerospace, and precision equipment where aesthetics and performance are crucial. SD Loc kbolt Pins offer reliable, tamper-resistant connections in demanding environments


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SD Lock bolt Truss Head

SD Lock bolt Pins with a truss head are high-strength fasteners designed for applications where secure and permanent connections are essential. The truss head design offers a wide bearing surface, making these lock bolts ideal for distributing loads evenly across materials. They are commonly used in the automotive, aerospace, and construction industries for their robust performance and resistance to vibration. SD Lock bolt Pins ensure reliable, tamper-resistant fastening, providing a long-lasting solution in demanding environments.

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Flange Nut

Flange nuts are versatile fasteners featuring an integrated flange that acts as a washer, distributing the load and providing a secure grip. These nuts are ideal for applications where loosening from vibration is a concern, such as in automotive, construction, and machinery assemblies. Flange nuts eliminate the need for separate washers, simplifying installation and enhancing stability. Manufactured from high-quality materials, they offer excellent durability, corrosion resistance, and long-lasting performance.

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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

Heavy hex nuts are robust fasteners designed with a thicker and wider profile than standard hex nuts, providing superior strength and load-bearing capacity. These nuts are ideal for heavy-duty applications, including structural connections, bridge construction, and heavy machinery. Manufactured from high-quality materials, heavy hex nuts offer exceptional durability, resistance to corrosion, and reliable performance under high-stress conditions.

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Size Range
Diameter

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

Length

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Hex Nut

Hex nuts are essential fasteners featuring a six-sided design for easy tightening with a standard wrench or socket. These versatile nuts are widely used in a variety of applications, including automotive, construction, and machinery assemblies, providing secure and reliable connections. Manufactured from high-quality materials, hex nuts offer excellent durability, resistance to corrosion, and long-lasting performance, making them a staple in any fastener toolkit.

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Size Range
Diameter

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

Length

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Jam Nut

Jam nuts are thin, high-strength nuts designed to lock standard nuts in place and prevent loosening due to vibration and movement. Featuring a reduced thickness, jam nuts are ideal for applications requiring a compact yet secure fastening solution. Commonly used in automotive, machinery, and construction industries, jam nuts offer excellent durability and resistance to corrosion, ensuring reliable performance in various environments.

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Size Range
Diameter

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

Length

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Serrated Flange Nut

Serrated flange nuts are hex nuts with non-spinning washers attached at the bottom. Underneath the washers are serrations which allow the nuts to securely fasten when vibrations are present and prevent them from being used with washers or on surfaces that can be scratched. Serrated flange nuts are innovative fasteners designed with a built-in flange that features serrations or teeth to prevent loosening from vibration. These nuts provide a secure grip by embedding into the mating surface, making them ideal for high-vibration applications in automotive, machinery, and construction settings. The serrated flange enhances stability and load distribution, while the high-quality materials ensure durability and corrosion resistance for long-lasting performance.


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Size Range
Diameter

Metric: M8 to M22
Inch: 0.3 " to 7/8 "

Length

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12 Point Flange Bolt

The 12-point bolt head design means that this screw can be tightened with a 12-point socket wrench which allows higher torques to be applied as compared to a standard internal hex drive socket head cap screw. This feature, combined with the larger bearing area under the head of the flange design provides further benefits over a traditional hex head cap screw. The 12-point flange bolt from Pankaj International features a unique 12-point head design that allows for higher torque applications compared to standard internal hex drive socket head cap screws. This design enables efficient tightening with a 12-point socket wrench, offering enhanced performance and reliability. Additionally, the larger bearing area under the flange head ensures superior load distribution and stability. Ideal for demanding applications, our 12-point flange bolts are engineered for strength and durability. As a leading fasteners manufacturer in Ludhiana, India, Pankaj International provides high-quality bolts suited for various industrial needs.

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Size Range
Diameter

1/4 " to 1-1/2"

Length

30 mm to 175 mm

Button Head Socket screw

Button head socket cap screws are also known as round head or dome head socket screws. They are manufactured with a smooth, slightly rounded dome at the head, which tends to be somewhat larger and more bulbous than standard cap screw varieties. Often, this means that a button head socket screw can accommodate a larger gauge of hex key or driver, and thus can be affixed with more torque to achieve greater clamping forces. Button head socket bolts, also known as round head or dome head socket screws, feature a smooth, slightly rounded dome at the head, making them larger and more bulbous compared to standard cap screws. This design allows for the accommodation of a larger gauge hex key or driver, enabling the application of greater torque and achieving superior clamping forces. Ideal for applications requiring enhanced strength and a sleek appearance, Pankaj International offers high-quality button head socket bolts engineered for durability and performance. As a leading fasteners manufacturer in Ludhiana, India, we provide reliable solutions for various industrial needs.

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Size Range
Diameter

M3 to M16

Length

50mm to 175mm

CSK Socket Bolt

Also known as a flat-head screw, a countersunk screw is a type of screw that's designed to rest flush with the object or surface in which it's inserted. They are called “countersunk screws” because they “sink” into objects and surfaces. They feature a flat head that tapers along the shaft. CSK socket bolts, also known as flat-head screws, are designed to rest flush with the surface they are inserted into, providing a sleek and unobtrusive finish. These countersunk screws feature a flat head that tapers along the shaft, allowing them to "sink" seamlessly into objects and surfaces. Ideal for applications where a smooth, level surface is required, Pankaj International offers high-quality CSK socket bolts that ensure reliable and aesthetically pleasing results. As a leading fasteners manufacturer in Ludhiana, we provide a comprehensive range of high tensile bolts, nuts, screws, and washers.

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Size Range
Diameter

M3 to M20

Length

50 mm to 175 mm

Nib Bolt

Flat Countersunk Nib Bolts are threaded fasteners with a flat head and are tapered underneath the head. The Nib bolt has a nib which protrudes from the taper that will fit into a countersunk hole with a slot in it which is designed to hold the nib in place as the nut is tightened or loosened on the bolt.Flat Countersunk Nib Bolts are designed to sit flush on a surface.  They are commonly called Plow Bolts as they are often used to affix a blade to the edge of a plow. Nib bolts, also known as flat countersunk nib bolts or plow bolts, are designed for secure and flush mounting in various applications. Featuring a flat head with a tapered underside and a protruding nib, these bolts are engineered to fit into countersunk holes with a slot that holds the nib in place as the nut is tightened or loosened. Ideal for use in securing plow blades or other components, nib bolts provide a smooth, flush surface and reliable fastening. As a leading fasteners manufacturer in Ludhiana, India, Pankaj International offers high-quality nib bolts designed for durability and performance.



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Size Range
Diameter

M6 to 24

Length

2" to 20"

Oval Neck Track Bolt

Track bolts, also called fang bolts or rail anchor bolts, are used to fix steel rails and rail chairs to rail ties, or to fasten rail joints to link rails. The track bolt is a bolt inserted through a hole in rail tie with a fanged nut that embeds into the lower surface of the tie. In general, the size of track bolts varies from requirements of the rail sections. Oval neck track bolts, also known as fang bolts or rail anchor bolts, are essential for securing steel rails and rail chairs to rail ties, as well as fastening rail joints to link rails. These specialized bolts feature an oval-shaped neck and are designed to be inserted through a hole in the rail tie, with a fanged nut that embeds into the lower surface of the tie for a secure fit. Available in various sizes to match rail section requirements, Pankaj International provides high-quality oval neck track bolts engineered for durability and reliability in rail systems.

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Size Range
Diameter

M10 to M22

Length

10" to 22"

Railway Sleeper Screw

Railway sleeper screws from Pankaj International are specially designed fasteners used for securing railway sleepers to rail tracks. Engineered for durability and reliability, these screws are vital for maintaining the stability and alignment of railway infrastructure. Featuring a robust thread design, our railway sleeper screws ensure a secure and long-lasting attachment to wooden or concrete sleepers, supporting the weight and movement of trains.
 As a leading fasteners manufacturer in Ludhiana, India, Pankaj International offers high-quality railway sleeper screws tailored for optimal performance in demanding rail environments.

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Size Range
Diameter

Metric: M19 to M25
Inch: 0.7" to 1"

Length

Metric: 140 mm to 200 mm
Inch: 5..5" to 7.9"

Serrated Flange Bolt

Armed with teeth-like serrations, serrated flange bolts are one-piece bolts bite into surfaces to resist vibration. This bolt is identifiable by the ridge or surrounding the bolt head, this built-in washer under the head of the Bolt acts to distribute the clamping load over a greater area. A flange bolt is designed to provide the same holding power as a washer. Serrated flange bolts from Pankaj International are engineered to resist vibration and secure connections effectively. Featuring teeth-like serrations around the flange, these one-piece bolts bite into surfaces to prevent loosening. The built-in flange acts as a washer, distributing the clamping load over a larger area to enhance holding power. Ideal for applications requiring reliable, vibration-resistant fasteners, our serrated flange bolts provide robust performance and durability. As a leading fasteners manufacturer in Ludhiana, India, Pankaj International delivers high-quality bolts designed for various industrial needs.

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Size Range
Diameter

M8 to M20

Length

75mm to 150mm

Socket Head Shoulder Screw

Socket head shoulder screws from Pankaj International are precision fasteners designed for applications requiring accurate alignment and robust performance. Featuring a cylindrical shoulder and a hexagonal socket head, these screws are ideal for creating pivot points or bearing surfaces in machinery and mechanical assemblies. The shoulder provides a precise, load-bearing surface while the socket head allows for secure tightening. As a leading fasteners manufacturer in Ludhiana, India, Pankaj International offers high-quality socket head shoulder screws that ensure reliability and durability in demanding applications.





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Size Range
Diameter

Metric: M5 to M20

Length

Metric: 15 mm to 100 mm

Plain Washer

Plain washers, also known as flat washers, are essential components used to distribute the load of a fastener, reducing surface wear and ensuring a secure assembly. These washers provide a smooth bearing surface, enhancing the stability of bolts, nuts, and other fasteners in various applications, including construction, automotive, and machinery. Manufactured from high-quality materials, plain washers offer excellent durability and resistance to corrosion, ensuring long-lasting performance and reliability.

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Size Range
Diameter

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

Length

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Spring Lock Washer

Unlike flat washers, which are placed on both the bolt and nut side, spring washers only go on the nut side of the fastener to establish a bond.A spring washer offers axial flexibility that's intended to prevent loosening of the fastener with which it's paired. Spring lock washers are essential fasteners used to prevent nuts and bolts from loosening due to vibration and torque. These washers are designed with a helical shape that applies continuous pressure on the fastener, maintaining a tight assembly. Ideal for various industrial, automotive, and machinery applications, spring lock washers ensure reliable and secure connections, enhancing the longevity and safety of assembled components. Made from high-quality materials, they offer excellent durability and resistance to corrosion and wear.

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Size Range
Diameter

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

Length

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