Fasteners

Hex Bolts

Hex Bolts from Prevest Metalloys are robust and reliable fasteners featuring a six-sided head that ensures strong grip and easy torque during installation. Widely used across industries like construction, machinery, and automotive, these bolts are manufactured in a variety of materials and sizes to deliver dependable fastening performance in demanding applications.

• Engineered with a six-sided head for secure tightening using standard tools.
• Offered in stainless steel, carbon steel, alloy steel, and custom alloys.
• Suited for load-bearing tasks in industrial, structural, and mechanical assemblies.
• Sizes available from M3 to M56, with customization options.
• Meets global specifications including DIN, ASTM, and BS standards.

Stud Bolts

Stud Bolts are headless fasteners that offer superior clamping force in flanged joints and pressure-based systems. Commonly used with two nuts, these bolts from Prevest Metalloys are ideal for structural assemblies, pipelines, and reactors where reliable, high-strength connections are essential.

• Threaded along the entire or partial length and used without a bolt head.
• Offered in stainless, carbon, alloy, and high-performance exotic alloys.
• Ideal for pipelines, flanged joints, and heavy-duty assemblies.
• Custom and standard dimensions from M3 to M56.
• Adheres to DIN, ASTM, BS, and other global engineering codes.

Hex Nuts

Hex Nuts offered by Prevest Metalloys are internally threaded components used for forming strong and dependable joints with bolts, screws, and studs. With a standard six-sided profile, these nuts offer excellent load handling, torque distribution, and vibration resistance in mechanical systems.

• Six-sided design ensures balanced torque application and firm fastening.
• Available in various grades of stainless, alloy, carbon steel, and brass.
• Ideal for load-bearing and vibration-prone environments.
• Manufactured in M3–M56 sizes with customization available.
• Standards-compliant with ASTM, DIN, BS, and ISO norms.

Socket Head Cap Screws

Prevest Metalloys supplies Socket Head Cap Screws for precision-critical assemblies, offering a cylindrical head with internal hex drive for compact and clean fastening. These screws are preferred in high-torque, limited-space environments across aerospace, machinery, and automotive applications.

• Compact cylindrical head with hex socket allows easy installation in tight spaces.
• Constructed from high-tensile stainless steel, alloy steel, or titanium.
• Ideal for mechanical equipment, engines, and load-bearing joints.
• Available in both metric and imperial sizes (M3 to M48+).
• Conforms to ISO, DIN, ASTM, and BS engineering standards.

Machine Screws

Machine Screws by Prevest Metalloys are designed for precise fastening in tapped holes or with nuts, commonly used in electrical, industrial, and equipment assemblies. Offered in various drive and head styles, these screws ensure consistent and secure connections in metal and plastic components.

• Uniform threading for reliable fastening with tapped holes or nuts.
• Available with slotted, Phillips, Torx, or hex drives and multiple head types.
• Manufactured in stainless steel, brass, alloy steel, and carbon steel.
• Used extensively in electronics, automotive, and assembly lines.
• Compliant with DIN, ISO, ASTM, and BS standards.

Washers

Washers from Prevest Metalloys are essential components used to spread load, reduce wear, and enhance the performance of fastening assemblies. Offered in flat, lock, and spring styles, our washers are designed for applications across construction, engineering, and electronics.

• Ensures load distribution and protects assembly surfaces.
• Offered in flat, lock, and spring variants to suit specific applications.
• Fabricated using high-quality steel, brass, or non-ferrous metals.
• Prevents loosening and enhances durability of bolted joints.
• Complies with ISO, DIN, ASTM, and BS international norms.

Spring Washers

Spring Washers from Prevest Metalloys provide a reliable locking effect to resist loosening from vibration and thermal expansion. Designed to exert continuous tension, they’re available in split, conical, and wave forms and are essential for dynamic environments like machinery, vehicles, and aerospace.

• Maintains tension and reduces the risk of joint loosening.
• Available in split, wave, and conical types for varied use-cases.
• Constructed from phosphor bronze, stainless, carbon, and alloy steels.
• Ideal for applications with high vibration or thermal cycles.
• Standardized according to ISO, DIN, ASTM, and BS guidelines.

U-Bolts & J-Bolts

Prevest Metalloys offers high-performance U-Bolts and J-Bolts engineered for secure fastening in a variety of industrial applications. U-Bolts, with their U-shaped body and threaded ends, are perfect for clamping pipes, rods, and cylindrical elements. J-Bolts, with their curved hook design, are ideal for hanging or anchoring structural components. These versatile fasteners are widely applied in automotive, construction, plumbing, and marine sectors.

• Engineered for clamping, anchoring, and suspension purposes.
• Offered in a wide range of sizes and materials to meet industrial standards.
• Fabricated from stainless steel, carbon steel, alloy steel, and galvanized steel.
• High strength, corrosion-resistant, and precision-threaded for secure fitment.
• Widely used in industrial pipelines, construction, marine systems, and more.

Anchor Bolts

Anchor Bolts from Prevest Metalloys are precision-crafted for anchoring structural components to concrete bases. These bolts deliver exceptional holding strength and are essential for construction, machinery installation, and infrastructure projects. Available in multiple variants including L-type, J-type, sleeve, and wedge anchors, our anchor bolts are made to endure high impact and load-bearing demands.

• Securely fastens machinery, structures, and equipment to concrete foundations.
• Available in multiple configurations for diverse engineering needs.
• Manufactured from high-quality stainless, carbon, and galvanized steels.
• Resilient under stress and compliant with global standards like ASTM, DIN, and ISO.
• Essential in industrial, civil, and commercial construction applications.

Wing Screws

Prevest Metalloys supplies ergonomically designed Wing Screws that allow for easy manual fastening without tools. Equipped with wing-shaped projections, these screws are perfect for quick installations and adjustments. Commonly used in machinery, electronics, enclosures, and furniture, they provide both strength and convenience in tool-free environments.

• Tool-free operation ideal for frequent assembly/disassembly scenarios.
• Ergonomic design ensures quick, hand-tightened installation.
• Produced in stainless steel, brass, carbon steel, and high-grade plastics.
• Available in various thread sizes and configurations.
• Adheres to global quality standards like DIN, ISO, ASTM, and BS.

Eye Bolts

Eye Bolts from Prevest Metalloys are designed for lifting, rigging, and securing applications. Featuring a closed-loop head, they enable safe attachment of cables, ropes, and hooks. Our range includes plain, shoulder, and swivel variants to meet varied load conditions in construction, marine, and industrial setups.

• Looped design ensures secure load handling and lifting capability.
• Multiple styles available for static and dynamic load applications.
• Built using durable metals for high tensile strength and corrosion resistance.
• Widely used in rigging systems, marine operations, and construction works.
• Conforms to industry benchmarks including DIN, ISO, BS, and ASTM.

Foundation Bolts

Prevest Metalloys manufactures reliable Foundation Bolts that anchor structures and heavy machines to concrete foundations. Designed for critical load-bearing applications, they come in L, J, U, and straight shapes to suit various installation needs. These bolts are indispensable in large-scale construction and heavy engineering projects.

• Heavy-duty anchoring for industrial foundations and concrete slabs.
• Available in custom shapes to suit specific engineering applications.
• Manufactured from robust materials with anti-corrosive coatings.
• Utilized in steel structures, power plants, and infrastructure development.
• Tested to meet ASTM, DIN, ISO, and BS quality standards.

Structural Bolts

Structural Bolts offered by Prevest Metalloys are engineered for high-strength joints in steel structures. Essential for large-scale frameworks, bridges, and machinery, these bolts are manufactured with advanced materials and finishes to deliver superior tensile and shear strength under demanding conditions.

• High-strength fasteners for structural steel-to-steel connections.
• Available in grades like A325, A490, and DIN 6914 for critical loads.
• Surface options include black oxide, zinc, and hot-dip galvanizing.
• Ideal for steel bridges, buildings, and industrial assemblies.
• Conforms to international standards including ASTM, ISO, and BS.

T-Head Bolts

Prevest Metalloys provides precision T-Head Bolts designed for use in T-slot channels where quick positioning and fastening are required. These bolts are widely utilized in tooling, construction systems, and machine fixtures due to their alignment efficiency and strong grip.

• Designed for T-slot applications in fixtures, machines, and assemblies.
• Enables adjustable positioning with strong anchoring capability.
• Offered in a range of lengths, thread forms, and surface finishes.
• Available in stainless steel, alloy steel, and carbon steel variants.
• Complies with DIN, ISO, ASTM, and BS standards for industrial usage.

Mushroom Head Square Neck Bolts

Prevest Metalloys offers Mushroom Head Square Neck Bolts, uniquely designed with a domed head and square neck to prevent rotation during installation. These bolts are favored in railway construction, timber joints, and industrial structures where a flush finish and high holding capacity are essential.

• Flush dome head design offers a clean finish and tamper resistance.
• Square neck prevents spinning during tightening for added security.
• Commonly used in railway lines, wooden structures, and metal frames.
• Crafted from corrosion-resistant steels with protective coatings.
• Follows quality norms including ASTM, ISO, DIN, and BS specifications.

Applications of Fasteners

At Prevest Metalloys, our high-performance fasteners are engineered to provide reliable and secure connections across a multitude of industrial sectors. These fasteners offer strength, durability, and corrosion resistance for both static and dynamic applications. Typical applications include:

• Construction & Infrastructure: Essential for steel framework, bridges, tunnels, scaffolding, and foundation anchoring systems.
• Oil & Gas Industry: Used in pipelines, drilling rigs, refineries, and offshore platforms where resistance to pressure and corrosion is critical.
• Power Generation: Applied in nuclear, thermal, hydro, and wind power plants for assembling turbines, boilers, and structural supports.
• Automotive & Transportation: Employed in vehicle assembly, engine mounting, suspension systems, and heavy transport vehicles.
• Marine & Shipbuilding: Utilized in hull assembly, deck equipment, ballast systems, and corrosion-resistant marine hardware.
• Petrochemical & Chemical Plants: Fasteners hold reactors, storage tanks, and process piping systems under high-stress conditions.
• Heavy Engineering & Machinery: Integral for machine bases, gearboxes, compressors, and mechanical assemblies.
• Aerospace & Defense: Used in aircraft structures, defense systems, missile components, and space-grade assemblies requiring high precision and reliability.