
Fastener
Vinex Metal Industries is a renowned Manufacturer and Exporter of premium-quality Fasteners, designed to meet the highest industry standards. Based in Mumbai, India, we specialize in providing precision-engineered fasteners that offer superior strength, durability, and performance for a variety of industrial and construction applications.
Our fasteners are produced using high-grade raw materials, including Stainless Steel, Carbon Steel, Alloy Steel, Duplex & Super Duplex Steel, and other specialty alloys. Each fastener undergoes thorough quality control processes and non-destructive testing (NDT) to ensure exceptional mechanical properties, corrosion resistance, and dimensional accuracy.
At Vinex Metal Industries, we offer a comprehensive range of fasteners to suit various applications, including bolts, nuts, washers, screws, anchors, and rivets. These fasteners are designed for critical operations in industries such as Construction, Power Plants, Petrochemical, Marine, Oil & Gas, Heavy Engineering, and Infrastructure.
We adhere to both National and International Standards, ensuring that our fasteners meet the highest levels of strength, safety, and performance. With a focus on innovation and technical excellence, we provide fasteners that deliver reliable, leak-proof, and secure connections across diverse industrial applications.
At Vinex Metal Industries, we pride ourselves on our ability to provide customized fastener solutions tailored to specific project requirements. Our fasteners not only enhance the structural integrity of various applications but also offer cost-effective, long-lasting solutions that reduce maintenance and improve overall operational efficiency.
Available Grades of Fasteners
Material | Standard | Grade | Type | Coating |
---|---|---|---|---|
Stainless Steel | ASTM A193 / A194 | B8, B8M | Bolts, Nuts, Washers | Passivated, Zinc Plated |
ISO 3506 | A2, A4 | Screws, Studs | Electropolished | |
DIN 933 / 934 | SS 304, SS 316 | Hex Bolts, Hex Nuts | Self-Color | |
Carbon Steel | ASTM A307 | Grade A, Grade B | Bolts, Nuts | Black Oxide, HDG |
ASTM A325 | Type 1, Type 3 | Structural Bolts | Phosphate Coated | |
Alloy Steel | ASTM A193 | B7, B7M | Studs, Heavy Hex Nuts | Teflon Coated |
Duplex Steel | ASTM A479 | 2205, 2507 | Bolts, Nuts | Plain Finish |
Nickel Alloy | ASTM B166 | Inconel 600, Monel 400 | Screws, Nuts | Nickel Plated |
Dimensional Standards of Fasteners
Types of Fasteners
Hex Bolts
Hex Bolts are one of the most commonly used fasteners, designed for high-strength and secure fastening in various industrial and construction applications. Featuring a six-sided head, these bolts provide excellent grip and torque for easy installation using a wrench or socket. Hex Bolts are available in multiple materials, coatings, and sizes, making them suitable for industries such as construction, automotive, machinery, and heavy engineering.

Key Features
- Features a six-sided head for easy tightening with a wrench or socket.
- Available in various materials, including stainless steel, carbon steel, alloy steel, and specialty alloys.
- Suitable for high-stress applications in construction, automotive, and heavy machinery.
- Available in different sizes ranging from M3 to M56 and custom sizes as per industry standards.
- Manufactured in compliance with DIN, ASTM, BS, and other international standards.
Stud Bolts
Stud Bolts are fully threaded or partially threaded fasteners used for high-strength clamping applications in various industries. Unlike conventional bolts, they do not have a head and are designed to be used with two nuts for a secure fastening. These bolts are widely utilized in flanged connections, pressure vessels, pipelines, and structural applications requiring strong, reliable joints.

Key Features
- Fully threaded or partially threaded fasteners with no head, secured using two nuts.
- Available in various materials, including stainless steel, carbon steel, alloy steel, and exotic alloys.
- Ideal for high-strength applications in pipelines, pressure vessels, and structural assemblies.
- Available in different sizes ranging from M3 to M56 and custom sizes as per industry requirements.
- Manufactured as per DIN, ASTM, BS, and other international standards.
Hex Nuts
Hex Nuts are six-sided internally threaded fasteners used in conjunction with bolts, screws, and studs to create secure and strong connections. Designed for high-strength fastening, these nuts provide excellent torque resistance and load distribution. Hex Nuts are available in various materials, finishes, and sizes, making them suitable for industries such as construction, automotive, machinery, and heavy engineering.

Key Features
- Six-sided internally threaded design for secure fastening with bolts and studs.
- Available in various materials, including stainless steel, carbon steel, alloy steel, and non-ferrous metals.
- Provides excellent load distribution and torque resistance for high-strength applications.
- Manufactured in sizes ranging from M3 to M56 and custom sizes as per industry requirements.
- Compliant with DIN, ASTM, BS, and other international standards for quality and performance.
Socket Head Cap Screws
Socket Head Cap Screws are high-strength fasteners designed for applications requiring precise and secure tightening. Featuring a cylindrical head with an internal hexagonal drive, these screws allow for easy installation in confined spaces using an Allen wrench or hex key. They are widely used in industries such as aerospace, automotive, machinery, and heavy engineering due to their superior tensile strength and reliable performance.

Key Features
- Cylindrical head with an internal hexagonal drive for precise torque control.
- Made from high-strength materials such as stainless steel, alloy steel, and titanium.
- Ideal for applications requiring strong, reliable fastening in limited space.
- Available in metric and imperial sizes, ranging from M3 to M48 and beyond.
- Manufactured as per international standards like DIN, ISO, ASTM, and BS.
Machine Screws
Machine Screws are precision-threaded fasteners designed for secure and reliable assembly in metal, plastic, and other materials. These screws typically feature a uniform diameter and are used with tapped holes or nuts for fastening applications. Machine Screws are available in a variety of head styles, drive types, and materials, making them ideal for applications in electrical, automotive, machinery, and industrial equipment industries.

Key Features
- Precision-threaded design for use with tapped holes or nuts in assembly applications.
- Available in multiple head styles, including flat, pan, round, and oval heads.
- Made from high-quality materials such as stainless steel, brass, carbon steel, and alloy steel.
- Offered in various drive types, including Phillips, slotted, Torx, and hex.
- Manufactured to international standards like DIN, ISO, ASTM, and BS.
Washers
Washers are thin, disk-shaped components used to distribute the load of a fastener, reduce friction, and prevent loosening in mechanical assemblies. They come in various types, including flat washers, spring washers, and lock washers, each serving a specific function. Washers are widely used in industries such as construction, automotive, machinery, and electronics to enhance fastening performance and durability.

Key Features
- Evenly distributes load and prevents surface damage from fasteners.
- Available in different types, including flat washers, spring washers, and lock washers for specific applications.
- Manufactured from stainless steel, carbon steel, alloy steel, brass, and other materials for durability.
- Enhances fastening reliability by reducing friction and preventing loosening due to vibrations.
- Produced in accordance with international standards such as DIN, ISO, ASTM, and BS.
Spring Washers
Spring Washers are specially designed fasteners that provide tension and prevent loosening in bolted assemblies subjected to vibrations and dynamic loads. These washers apply a continuous force to maintain secure fastening, reducing the risk of fastener loosening over time. Available in various designs, including split, conical, and wave washers, they are widely used in industries such as automotive, machinery, aerospace, and construction.

Key Features
- Provides tension and prevents loosening in bolted assemblies.
- Available in different types, including split, conical, and wave washers for specific applications.
- Made from stainless steel, carbon steel, alloy steel, and phosphor bronze for enhanced durability.
- Ideal for use in high-vibration environments such as machinery, automotive, and aerospace industries.
- Manufactured as per international standards like DIN, ISO, ASTM, and BS for consistency and reliability.
U-Bolts & J-Bolts
U-Bolts and J-Bolts are specialized fasteners designed for securing pipes, cables, and structural elements in various industrial applications. U-Bolts have a U-shaped design with threaded ends, making them ideal for clamping cylindrical objects, while J-Bolts feature a J-shaped hook for anchoring and hanging components. These bolts are commonly used in construction, automotive, plumbing, and marine industries due to their robust holding strength and versatility.

Key Features
- U-Bolts provide secure clamping for pipes, poles, and round bars.
- J-Bolts are designed for anchoring and hanging structural components.
- Manufactured from stainless steel, carbon steel, alloy steel, and galvanized steel for durability and corrosion resistance.
- Available in standard and custom sizes to meet diverse industry requirements.
- Widely used in construction, plumbing, automotive, and marine applications.
Anchor Bolts
Anchor Bolts are heavy-duty fasteners designed to secure structures and equipment to concrete foundations. These bolts provide strong, stable anchoring and are essential for ensuring structural integrity in construction and industrial applications. Available in different types such as L-shaped, J-shaped, wedge, and sleeve anchor bolts, they are widely used in bridges, buildings, machinery, and infrastructure projects.

Key Features
- Provides secure anchoring of structures and equipment to concrete foundations.
- Available in various types, including L-bolts, J-bolts, wedge anchors, and sleeve anchors.
- Made from high-strength materials such as stainless steel, carbon steel, and galvanized steel for corrosion resistance.
- Designed to withstand heavy loads and high-impact forces in industrial applications.
- Compliant with international standards such as ASTM, DIN, ISO, and BS for quality and reliability.
Wing Screws
Wing Screws are specialized fasteners designed for tool-free manual tightening and loosening. Featuring large wing-like projections on the head, they allow for easy grip and quick adjustments without requiring additional tools. These screws are widely used in applications requiring frequent assembly and disassembly, such as industrial equipment, machinery, electronics, and furniture.

Key Features
- Features wing-like projections for easy hand tightening without tools.
- Ideal for applications requiring quick assembly and frequent adjustments.
- Made from durable materials such as stainless steel, carbon steel, brass, and plastic for various environments.
- Available in different thread sizes and lengths to meet diverse fastening requirements.
- Manufactured according to international standards like DIN, ISO, ASTM, and BS.
Eye Bolts
Eye Bolts are heavy-duty fasteners featuring a looped head designed for lifting, securing, and anchoring applications. These bolts provide a reliable attachment point for ropes, cables, and chains in construction, marine, rigging, and industrial applications. Available in different types such as plain eye bolts, shoulder eye bolts, and swivel eye bolts, they ensure strong and stable connections in heavy-load conditions.

Key Features
- Designed with a looped head for secure attachment of ropes, cables, and chains.
- Available in various types, including plain eye bolts, shoulder eye bolts, and swivel eye bolts for different applications.
- Manufactured from high-strength materials such as stainless steel, carbon steel, alloy steel, and galvanized steel for durability and corrosion resistance.
- Suitable for lifting, rigging, anchoring, and securing loads in construction and industrial settings.
- Manufactured to meet international standards such as DIN, ISO, ASTM, and BS for quality assurance.
Foundation Bolts
Foundation Bolts are specialized fasteners used for anchoring heavy structures to concrete foundations. These bolts provide exceptional strength and stability, making them essential for securing machinery, steel structures, and industrial equipment. Available in various types, such as L-shaped, J-shaped, U-shaped, and straight anchor bolts, they are widely used in construction, power plants, bridges, and heavy engineering applications.

Key Features
- Designed for securing heavy structures and equipment to concrete foundations.
- Available in different types, including L-bolts, J-bolts, U-bolts, and straight anchor bolts for various applications.
- Made from high-strength materials such as stainless steel, carbon steel, and galvanized steel for durability and corrosion resistance.
- Ideal for use in construction, bridges, power plants, and industrial foundations.
- Manufactured according to international standards such as DIN, ISO, ASTM, and BS for reliability and performance.
Structural Bolts
Structural Bolts are high-strength fasteners designed for connecting steel-to-steel components in construction and industrial applications. These bolts are commonly used in bridges, buildings, and heavy machinery where load-bearing capacity and durability are essential. Structural bolts are available in various grades and coatings to enhance strength, corrosion resistance, and longevity.

Key Features
- Designed for high-strength applications in steel construction and structural frameworks.
- Available in different grades such as ASTM A325, A490, and DIN 6914 for heavy-duty performance.
- Made from carbon steel, alloy steel, and stainless steel with zinc, hot-dip galvanized, or black oxide coatings for corrosion resistance.
- Provides exceptional tensile and shear strength for load-bearing structures.
- Manufactured to meet international standards like ASTM, ISO, DIN, and BS for reliability and safety.
T-Head Bolts
T-Head Bolts are specialized fasteners with a T-shaped head designed to fit into T-slots or channels, providing a secure and adjustable fastening solution. These bolts are widely used in construction, machinery, and industrial assemblies where quick and precise positioning is required. T-Head Bolts offer strong and reliable connections in applications such as machine tool fixtures, rail systems, and structural frameworks.

Key Features
- T-shaped head allows for easy insertion and secure fastening in T-slots and channels.
- Ideal for use in machine tool fixtures, construction, rail systems, and industrial equipment.
- Manufactured from stainless steel, carbon steel, and alloy steel with various coatings for enhanced durability and corrosion resistance.
- Available in multiple thread sizes and lengths to suit different fastening needs.
- Compliant with international standards such as DIN, ISO, ASTM, and BS for quality assurance.
Mushroom Head Square Neck Bolts
Mushroom Head Square Neck Bolts are specialized fasteners featuring a low-profile, dome-shaped head with a square neck under the head. The square neck prevents rotation during installation, ensuring a secure and stable fit. These bolts are commonly used in timber construction, railway tracks, and metal structures where a flush finish and strong hold are required.

Key Features
- Mushroom-shaped head provides a smooth, low-profile finish for safety and aesthetics.
- Square neck under the head prevents bolt rotation during tightening.
- Ideal for timber construction, railway tracks, structural frameworks, and metal applications.
- Available in stainless steel, carbon steel, and alloy steel with various coatings for enhanced corrosion resistance.
- Manufactured according to DIN, ISO, ASTM, and BS standards for reliability and durability.
Applications of Fasteners
Fasteners are essential components in industrial applications, ensuring secure and durable connections in various structures and equipment. As a leading manufacturer and supplier, Vinex Metal Industries provides premium-quality fasteners designed for high strength, corrosion resistance, and precision engineering. Our fasteners are extensively used in:
- Oil & Gas Industry: High-performance fasteners for pipelines, refineries, and offshore rigs, ensuring reliable and leak-proof assembly in extreme conditions.
- Petrochemical & Refineries: Corrosion-resistant fasteners designed for high-pressure and high-temperature environments in chemical processing units.
- Power Plants: Essential for thermal, nuclear, and hydroelectric plants, providing secure fastening solutions for steam and turbine systems.
- Construction & Infrastructure: Heavy-duty fasteners for bridges, skyscrapers, tunnels, and industrial facilities, ensuring structural integrity and safety.
- Marine & Shipbuilding: Engineered for corrosion resistance in seawater applications, used in ship hulls, offshore platforms, and marine pipelines.
- Heavy Engineering: High-strength fasteners for machinery, automotive, and aerospace applications, designed to withstand heavy loads and vibrations.