We are one of the leading manufacturers and exporters of Copper Hex Bolts and Copper Bolts from India. We have been supplying high-quality Copper fasteners to the world market for many decades. Our extensive range of Copper Hex Bolts encompasses various specifications including DIN 933 Copper hex bolts, ISO 4017 hex Copper bolts, Copper hex head cap screws, and full threaded Copper bolts. With advanced manufacturing facilities and stringent quality control measures, we ensure each Copper bolt meets international standards and customer specifications. Our expertise in producing Copper metric bolts and Copper hex set screws has made us a trusted partner for industries worldwide. We specialize in custom manufacturing with flexibility in production schedules, offering comprehensive solutions for marine, electrical, architectural, and industrial applications. Our commitment to excellence, combined with three decades of global experience, positions us as your preferred supplier for all Copper fastener requirements.

Copper Hex Bolts

Copper Hex Bolts feature a hexagonal head design that provides superior grip and torque transmission during installation. These bolts are manufactured using C10100 Oxygen-Free Electronic Copper and C11000 Electrolytic Tough Pitch Copper, ensuring maximum electrical conductivity and corrosion resistance. Our Copper hex bolts are available in thread specifications ranging from M3 to M64 in metric dimensions and #4 to 4 inches in imperial sizes. The hexagonal head configuration allows for efficient installation using standard hex keys and provides reliable fastening strength in demanding applications.

Copper Bolts

Copper Bolts encompass our complete range of threaded fasteners manufactured from premium Copper alloys. These bolts exhibit excellent thermal conductivity, making them ideal for heat exchange applications and electrical grounding systems. Our Copper bolt manufacturing process involves precision cold heading followed by thread rolling to achieve superior surface finish and dimensional accuracy. Available in various head styles including hex, socket head cap, and button head configurations, these bolts serve critical applications in marine hardware, electrical panels, and architectural installations.

Copper Hex Head Cap Screws

Copper Hex Head Cap Screws combine the functionality of traditional cap screws with the superior properties of Copper. These screws feature a cylindrical head with internal hex socket, enabling flush mounting and high torque applications. Manufactured according to DIN 912 and ISO 4762 standards, our Copper hex head cap screws offer precise dimensional control and consistent thread engagement. The internal hex drive system prevents cam-out and provides reliable torque transmission, making these screws perfect for precision assemblies in electronic equipment and marine applications.

Copper Hex Set Screws

Copper Hex Set Screws are specialized fasteners designed for securing components without protruding heads. These screws feature various point styles including cup point, cone point, and flat point configurations to accommodate different application requirements. Our Copper set screws are manufactured from C12200 Phosphorus Deoxidized Copper to ensure optimal strength and corrosion resistance. Available in both metric and imperial thread specifications, these screws provide reliable positioning and locking mechanisms in electrical assemblies and precision machinery.

Full Threaded Copper Bolts

Full Threaded Copper Bolts feature continuous threading along the entire shank length, providing maximum thread engagement and holding power. These bolts are particularly effective in applications requiring extended thread engagement or where the bolt length needs to be adjusted during assembly. Our full threaded Copper bolts are manufactured using precision thread rolling techniques that enhance thread strength and surface finish. Available in lengths up to 300mm, these bolts serve critical applications in structural assemblies, marine hardware, and electrical grounding systems.

Copper Metric Bolts

Copper Metric Bolts are manufactured according to European and international metric standards, featuring precise dimensional control and standardized thread specifications. Our metric bolt range covers thread sizes from M3 to M64 with coarse and fine pitch options. These bolts comply with DIN 933, ISO 4017, and EN 24017 standards, ensuring compatibility with global metric fastening systems. The metric threading provides superior load distribution and thread engagement compared to imperial alternatives, making these bolts ideal for precision engineering applications.

DIN 933 Copper Hex Bolts

DIN 933 Copper Hex Bolts represent the German industrial standard for partially threaded hexagonal bolts. These bolts feature a distinct shoulder between the head and threaded portion, providing optimal shear strength and precise positioning. Our DIN 933 compliant Copper bolts are manufactured with strict adherence to dimensional tolerances and material specifications outlined in the standard. The partially threaded design ensures maximum clamping force while maintaining thread integrity under dynamic loading conditions.

ISO 4017 Hex Copper Bolts

ISO 4017 Hex Copper Bolts conform to the international standard for partially threaded hexagonal bolts, ensuring global compatibility and standardization. These bolts feature identical specifications to DIN 933 but carry the international ISO designation for broader market acceptance. Our ISO 4017 Copper hex bolts undergo rigorous quality testing to ensure compliance with dimensional accuracy, thread specifications, and material properties. The international standard certification facilitates seamless integration into global supply chains and engineering specifications.

Q1: What are the key advantages of Copper hex bolts over Steel alternatives?
Copper hex bolts offer superior corrosion resistance in marine environments, excellent electrical and thermal conductivity, natural antimicrobial properties, and non-magnetic characteristics. Unlike Steel fasteners, Copper bolts do not rust and maintain their integrity in saltwater applications while providing reliable electrical grounding capabilities.

Q2: Can you manufacture custom Copper bolts according to specific drawings?
Yes, we specialize in custom Copper bolt manufacturing based on customer drawings and specifications. Our engineering team reviews technical requirements and provides feasibility analysis, material recommendations, and production timelines. We accommodate special head styles, thread specifications, and dimensional requirements beyond standard offerings.

Q3: What quality certifications do your Copper bolts carry?
Our Copper fasteners are manufactured under ISO 9001:2015 quality management system with material certifications including ASTM B152, EN 13601, and JIS H3100. Each batch includes material test certificates, dimensional inspection reports, and compliance documentation for relevant international standards.

Q4: Do you offer different thread standards for international markets?
We manufacture Copper bolts with various thread standards including ASTM UNC/UNF for North American markets, ISO metric for European applications, JIS metric for Japanese requirements, and BS Whitworth for British specifications. Our threading capabilities ensure global compatibility and seamless integration into diverse fastening systems.

Q5: What is the minimum order quantity for Copper hex bolts?
Our standard minimum order quantity is 100 pieces per size and specification for Copper hex bolts. For custom specifications or non-standard dimensions, the minimum quantity may vary based on tooling requirements and material optimization. We accommodate smaller quantities for prototyping and testing purposes with adjusted pricing structures.

Q6: How do you ensure consistent quality across large production batches?
We implement statistical process control (SPC) throughout manufacturing with regular dimensional inspections, material property testing, and surface finish verification. Each production batch undergoes first-piece inspection, in-process monitoring, and final quality audits. Our quality laboratory performs tensile testing, conductivity measurement, and metallurgical analysis to ensure specification compliance.

Q7: Are your Copper bolts suitable for high-temperature applications?
Copper bolts maintain excellent thermal stability up to 200°C in standard atmospheric conditions. For higher temperature applications, we recommend phosphorus deoxidized Copper (C12200) which offers enhanced creep resistance and thermal cycling performance. Specific application engineering support is available for extreme temperature requirements.

Q8: Can you provide Copper bolts with specialized coatings or platings?
While Copper naturally resists corrosion, we offer specialized surface treatments including nickel plating for enhanced wear resistance, tin plating for improved solderability, and silver plating for maximum electrical conductivity. These treatments are applied according to relevant ASTM and MIL specifications with appropriate thickness control and adhesion testing.

Q9: What testing procedures do you follow for material verification?
Our quality control laboratory performs optical emission spectroscopy for chemical composition analysis, conductivity testing using eddy current methods, mechanical testing per ASTM E8M, and dimensional inspection using coordinate measuring machines. All testing follows documented procedures with calibrated equipment and certified reference standards.

Q10: Do you provide technical support for fastener selection and application engineering?
Our technical team offers comprehensive application engineering support including material selection guidance, torque specifications, joint design recommendations, and compatibility analysis. We provide technical data sheets, application notes, and installation guidelines to ensure optimal performance of Copper fasteners in specific applications.

Cold Heading: Manufacturing process where Copper wire is formed into bolt heads and shanks at room temperature using high-pressure dies, enhancing material strength through work hardening.

Thread Rolling: Process of forming threads by displacing material using hardened steel dies, creating stronger threads compared to cutting methods while improving surface finish.

IACS (International Annealed Copper Standard): Measurement standard for electrical conductivity where pure annealed Copper at 20°C represents 100% conductivity reference.

Pitch Diameter: Effective diameter of threaded fastener measured at the point where thread width equals groove width, critical for proper thread engagement.

UNC/UNF: Unified National Coarse and Unified National Fine thread standards used in North American fastener applications with specific pitch specifications.

DIN 933: German industrial standard specifying dimensions, tolerances, and technical requirements for partially threaded hexagonal bolts.

Passivation: Chemical treatment process that removes surface contaminants and enhances natural corrosion resistance of Copper alloys.

Work Hardening: Strengthening mechanism in Copper alloys where plastic deformation increases material hardness and tensile strength.

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Industry-specific Terms: Copper grounding bolts electrical panels, antimicrobial Copper fasteners marine hardware, thermal conductive Copper bolts heat exchangers, architectural Copper bolts exterior applications

Technical Specifications: M6 M8 M10 Copper hex bolts metric threading, UNC UNF threaded Copper bolts American standard, phosphorus deoxidized Copper bolts C12200 grade, oxygen free Copper bolts C10100 specification

International Standards: JIS H3100 Copper bolts Japanese standard, EN 13601 European Copper fasteners, BS 6017 British Copper bolt specifications, GB T5231 Chinese Copper grade standards

Some Other related grades:

1. Core Materials & Alloys

These are the specific metal compositions used for these bolts.

• Pure Copper (C101, C110): For maximum electrical conductivity.

• Beryllium Copper (BeCu, Alloy 172): Known for high strength and being non-sparking.

• Silicon Bronze (C651, C655): The most common “workhorse” alloy for marine and architectural use.

• Copper Nickel (CuNi, 90/10, 70/30): Excellent corrosion resistance in seawater.

• Phosphor Bronze (Alloy 510, 544): Good fatigue resistance and wear resistance.

• Brass: A copper-zinc alloy, often grouped with copper fasteners.

• Aluminum Bronze: High strength and excellent wear resistance.

• Cartridge Brass (Alloy 260): A common brass alloy for cold-headed fasteners.