Product Overview
We are one of the leading manufacturers and exporters of Brass Allen Key Socket Screws from India. We have been supplying high-quality Brass hex socket head cap screws to the world market for many decades. Our precision-engineered Brass socket screws combine superior corrosion resistance with exceptional mechanical properties, making them ideal for marine applications, electrical installations, and architectural hardware. These socket head cap screws feature a cylindrical head with internal hexagonal drive, providing clean aesthetics and high torque transmission capabilities. Our manufacturing facility employs advanced CNC machining technology to ensure consistent dimensional accuracy and superior surface finish. Each Brass allen key screw undergoes rigorous quality control testing to meet international standards including DIN 912, ISO 4762, and ASME B18.3.1M specifications. With over three decades of experience in precision fastener manufacturing, we have established ourselves as a trusted supplier to industries worldwide including automotive, marine, electronics, and construction sectors.
Material Grades and Specifications
| Standard | Grade/Designation | Composition (%) | Tensile Strength (MPa) | Applications |
|---|---|---|---|---|
| ASTM B16 | C36000 (Free Cutting Brass) | Cu: 60-63, Zn: 35.5-38.5, Pb: 2.5-3.7 | 338-414 | General purpose fasteners |
| BS 2874 | CZ121 (58/3 Brass) | Cu: 57-59, Zn: 39-42, Pb: 2-3.5 | 340-430 | Marine hardware |
| DIN 17660 | CuZn39Pb3 (Ms58) | Cu: 57-60, Zn: 37-40, Pb: 2.5-3.5 | 350-450 | Precision components |
| JIS H3250 | C3604 (Brass Rod) | Cu: 60-63, Zn: Remainder, Pb: 2.5-3.7 | 340-410 | Electrical applications |
| IS 319 | Grade I (Leaded Brass) | Cu: 58-62, Zn: 36-40, Pb: 2-4 | 320-400 | Indian standard applications |
| GB/T 4423 | HPb59-1 (Chinese Standard) | Cu: 57-60, Zn: 38-42, Pb: 0.8-1.9 | 335-420 | Export quality fasteners |
| Property | Value | Unit | Test Standard |
|---|---|---|---|
| Density | 8.4-8.7 | g/cm³ | ASTM B311 |
| Electrical Conductivity | 28-32 | % IACS | ASTM B193 |
| Thermal Conductivity | 115-125 | W/m·K | ASTM E1461 |
| Coefficient of Expansion | 20.5 | ×10⁻⁶/°C | ASTM E228 |
| Modulus of Elasticity | 103-110 | GPa | ASTM E111 |
| Hardness (Brinell) | 55-85 | HB | ASTM E10 |
Cold Heading Process: Our Brass socket screws begin with precision cold heading operations using advanced multi-station headers. The process starts with high-quality Brass wire or rod material that undergoes progressive forming stages to create the hexagonal socket head geometry. Cold heading ensures superior material utilization, enhanced mechanical properties through work hardening, and excellent dimensional consistency across large production batches.
Thread Rolling Technology: External threads are formed using thread rolling machines rather than cutting, which provides stronger threads with improved fatigue resistance. The thread rolling process cold-works the material, creating a smoother surface finish and better dimensional accuracy compared to cut threads. Our thread rolling equipment can handle metric threads from M3 to M24 and unified threads from #4-40 to 1"-8.
CNC Secondary Operations: Socket formation is accomplished using precision CNC machining centers equipped with specialized tooling for hexagonal socket creation. The internal Allen key socket is machined to precise tolerances ensuring proper fit with standard hex keys. Additional operations include chamfering, deburring, and length adjustment to meet customer specifications.
| Equipment Type | Manufacturer/Model | Capacity | Precision Level | Application |
|---|---|---|---|---|
| Multi-Station Cold Headers | Hatebur AMP 20 | M3-M20 | ±0.05mm | Socket head formation |
| Thread Rolling Machines | Profiroll RP-6 | M3-M24 | 6g tolerance class | External thread rolling |
| CNC Machining Centers | Haas VF-2SS | ±0.01mm | Surface finish Ra 0.8 | Socket machining |
| Induction Heating | EFD Minac 6/0.5 | 1-50kHz | ±5°C | Stress relief annealing |
| Vision Inspection | Keyence CV-X100 | 0.1μm resolution | 100% inspection | Dimensional verification |
| Thread Size | Head Diameter (D) | Head Height (H) | Socket Size (S) | Socket Depth (T) | Standard Lengths (L) |
|---|---|---|---|---|---|
| M3 | 5.5 | 3.0 | 2.5 | 1.5 | 6, 8, 10, 12, 16, 20, 25 |
| M4 | 7.0 | 4.0 | 3.0 | 2.0 | 8, 10, 12, 16, 20, 25, 30 |
| M5 | 8.5 | 5.0 | 4.0 | 2.5 | 10, 12, 16, 20, 25, 30, 35, 40 |
| M6 | 10.0 | 6.0 | 5.0 | 3.0 | 12, 16, 20, 25, 30, 35, 40, 50 |
| M8 | 13.0 | 8.0 | 6.0 | 4.0 | 16, 20, 25, 30, 40, 50, 60, 70 |
| M10 | 16.0 | 10.0 | 8.0 | 5.0 | 20, 25, 30, 40, 50, 60, 70, 80, 100 |
| M12 | 18.0 | 12.0 | 10.0 | 6.0 | 25, 30, 40, 50, 60, 70, 80, 100, 120 |
| M16 | 24.0 | 16.0 | 14.0 | 8.0 | 40, 50, 60, 70, 80, 100, 120, 150 |
| Parameter | Tolerance Range | Measurement Method | Inspection Frequency |
|---|---|---|---|
| Thread Pitch Diameter | 6g (±0.018mm for M6) | Thread plug gauges | Every 100 pieces |
| Head Diameter | ±0.10mm | Digital calipers | Every 50 pieces |
| Head Height | ±0.10mm | Height gauge | Every 50 pieces |
| Socket Size | +0.05/-0.00mm | Hex key gauges | Every 25 pieces |
| Overall Length | ±0.50mm | Digital calipers | Every 100 pieces |
| Surface Roughness | Ra ≤ 1.6μm | Surface profilometer | Daily sampling |
Natural Brass Finish: Our standard Brass socket screws feature a natural mill finish with excellent corrosion resistance properties. The natural Brass surface develops a protective patina over time, enhancing corrosion resistance in marine and outdoor environments. This finish maintains the aesthetic appeal of Brass while providing functional protection against atmospheric corrosion.
Polished Brass Finish: For decorative applications, we offer highly polished Brass socket screws with mirror-like surface finish. The polishing process involves multiple stages of abrasive treatment followed by buffing to achieve superior surface quality suitable for architectural hardware and luxury fixtures.
Lacquered Brass: To prevent tarnishing and maintain the bright Brass appearance, we apply clear protective lacquer coatings. This finish is particularly suitable for indoor applications where aesthetic appearance is critical, such as furniture hardware and decorative panels.
Passivation Treatment: Our Brass socket screws can undergo specialized passivation treatments to enhance corrosion resistance in aggressive environments. The passivation process removes surface contaminants and creates a uniform oxide layer that provides additional protection against galvanic corrosion.
Marine and Offshore Industry: Brass socket head cap screws are extensively used in marine applications due to their superior corrosion resistance in saltwater environments. Common applications include yacht hardware, ship deck fittings, porthole assemblies, and marine electrical panels. The non-magnetic properties of Brass make these fasteners ideal for navigation equipment mounting and underwater installations.
Electrical and Electronics Sector: The excellent electrical conductivity of Brass makes these socket screws perfect for electrical enclosures, switchgear assemblies, and grounding applications. They are commonly used in transformer housings, electrical panel assemblies, and telecommunications equipment where both mechanical strength and electrical performance are required.
Architectural and Construction: In architectural applications, Brass allen key screws provide both functional and aesthetic benefits. They are used in curtain wall systems, decorative panels, handrail assemblies, and architectural hardware where the warm golden appearance of Brass complements design requirements while providing reliable fastening solutions.
Automotive and Transportation: Brass socket screws find applications in automotive electrical systems, instrument panels, and decorative trim assemblies. Their corrosion resistance and aesthetic appeal make them suitable for both functional and decorative automotive applications.
Corrosion Resistance: Brass naturally resists corrosion in atmospheric conditions and many chemical environments, making it ideal for outdoor and marine applications.
Aesthetic Appeal: The warm golden color of Brass provides decorative value in visible applications.
Non-Magnetic Properties: Essential for applications near sensitive electronic equipment or navigation instruments.
Electrical Conductivity: Provides reliable electrical connections in grounding and bonding applications.
| Standard | Description | Key Requirements | Our Compliance |
|---|---|---|---|
| DIN 912 | Socket head cap screws | Dimensional tolerances, mechanical properties | Full compliance with testing certificates |
| ISO 4762 | Socket head cap screws | International dimensional standards | Certified compliance with traceability |
| ASME B18.3.1M | Metric socket screws | US standard for socket head cap screws | Third-party verified compliance |
| BS 4168 | British standard socket screws | UK market requirements | UKAS certified testing |
| JIS B1176 | Japanese socket head cap screws | Japanese industrial standards | JIS certified manufacturing |
| IS 5372 | Indian standard socket screws | Bureau of Indian Standards | ISI mark certification |
Manufacturing Capacity: Our state-of-the-art production facility operates with multiple production lines capable of manufacturing over 2 million Brass socket screws per month. We maintain strategic inventory levels of common sizes to ensure rapid delivery for standard specifications. Our flexible manufacturing setup allows for quick changeovers between different sizes and specifications, enabling us to handle both large-scale production runs and smaller custom orders efficiently.
Standard Turnaround Time: We maintain a standard delivery schedule of 4-6 weeks for most Brass socket screw orders. This timeframe includes material procurement, manufacturing, quality inspection, and packaging. For urgent requirements, we offer expedited production services with delivery possible within 2-3 weeks, subject to current production schedules and material availability.
Custom Manufacturing: For special dimensions, non-standard materials, or unique specifications, our engineering team works closely with customers to develop tailored solutions. Custom orders typically require 6-8 weeks for completion, including prototyping, approval, and full production. We maintain detailed project timelines and provide regular updates throughout the manufacturing process.
| Order Type | Minimum Quantity | Standard Lead Time | Expedited Service | Custom Tooling |
|---|---|---|---|---|
| Standard Sizes (Stock) | 1,000 pieces | 2-3 weeks | 1-2 weeks | Not required |
| Standard Production | 5,000 pieces | 4-6 weeks | 2-3 weeks | Not required |
| Custom Dimensions | 10,000 pieces | 6-8 weeks | 4-5 weeks | 2-3 weeks additional |
| Special Materials | 25,000 pieces | 8-10 weeks | 5-6 weeks | As required |
Mechanical Performance: Our Brass socket head cap screws deliver consistent mechanical performance with tensile strengths ranging from 320-450 MPa depending on the specific Brass alloy used. The cold heading manufacturing process enhances the mechanical properties through work hardening, resulting in improved fatigue resistance and load-bearing capacity compared to machined alternatives.
Corrosion Resistance Testing: All Brass socket screws undergo rigorous corrosion testing including salt spray testing per ASTM B117 standards. Our products consistently demonstrate superior performance with minimal surface deterioration after 500+ hours of salt spray exposure, making them suitable for demanding marine and coastal applications.
Torque Performance: The precision-machined hexagonal sockets provide optimal torque transmission with minimal cam-out risk. Testing demonstrates that our Brass socket screws can reliably handle torque values up to 80% of the theoretical maximum without socket deformation or hex key slippage.
| Performance Parameter | Test Method | Specification | Typical Results |
|---|---|---|---|
| Tensile Strength | ASTM F606 | ≥320 MPa | 340-450 MPa |
| Proof Load | ISO 898-1 | 85% of tensile | 290-380 MPa |
| Salt Spray Resistance | ASTM B117 | 500 hours | 720+ hours |
| Socket Torque Capacity | Internal standard | Per DIN 912 | 110-120% of standard |
| Thread Engagement | ISO 898-2 | 6g tolerance class | 5g-6g consistent |
Q1: What is the maximum torque rating for Brass socket head cap screws?
Answer: The maximum torque rating depends on the screw size and thread engagement. For M6 Brass socket screws, the recommended maximum torque is 8-10 Nm, while M10 screws can handle 25-30 Nm. Always ensure proper thread engagement of at least 1.5 times the bolt diameter for optimal performance.
Q2: Can Brass socket screws be used in high-temperature applications?
Answer: Brass socket screws can operate reliably at temperatures up to 200°C (392°F) for continuous service. At elevated temperatures, consider the thermal expansion coefficient of 20.5×10⁻⁶/°C and potential strength reduction. For applications above 150°C, we recommend consulting our technical team for specific alloy recommendations.
Q3: What is the difference between DIN 912 and ISO 4762 socket screws?
Answer: DIN 912 and ISO 4762 are essentially equivalent standards with identical dimensional requirements. ISO 4762 is the international version of the DIN 912 specification. Our Brass socket screws comply with both standards, ensuring global compatibility and acceptance.
Q4: How do you ensure consistent quality across large production batches?
Answer: We employ statistical process control (SPC) with automated inspection systems that monitor critical dimensions continuously. Our quality management system includes incoming material inspection, in-process monitoring, and final inspection with documented traceability for every batch produced.
Q5: What packaging options are available for Brass socket screws?
Answer: We offer flexible packaging including bulk bags, small quantity boxes, blister packs, and custom packaging with customer branding. Anti-tarnish packaging is available for polished Brass finishes. Export packaging includes moisture barriers and corrosion inhibitors for long-term storage.
Q6: Can you manufacture socket screws with non-standard head heights?
Answer: Yes, we specialize in custom manufacturing and can produce socket screws with modified head heights, diameters, or socket depths. Custom tooling may be required depending on the deviation from standard dimensions. Minimum quantities typically start at 10,000 pieces for custom specifications.
Q7: What is the shelf life of Brass socket screws?
Answer: When stored properly in dry conditions with appropriate packaging, Brass socket screws have an indefinite shelf life. The natural corrosion resistance of Brass ensures long-term stability. We recommend storage in controlled humidity environments below 60% RH for optimal condition maintenance.
Q8: Are your Brass socket screws RoHS compliant?
Answer: Yes, our Brass socket screws are fully RoHS compliant. We use lead-free Brass alloys for applications requiring RoHS compliance, though standard leaded Brass options remain available for applications where RoHS compliance is not mandatory. Material certificates are provided with each shipment.
Q9: What testing certificates do you provide with shipments?
Answer: We provide comprehensive material test certificates (MTC) including chemical composition analysis, mechanical property testing, dimensional inspection reports, and compliance certificates for relevant international standards. Third-party testing certificates are available upon request.
Q10: How do you handle quality issues or non-conforming products?
Answer: We maintain a comprehensive quality management system with immediate response protocols for any quality concerns. Non-conforming products are replaced at no cost, and we conduct thorough root cause analysis to prevent recurrence. Our quality team is available 24/7 for urgent quality issues.
Q11: What are the advantages of cold-headed versus machined socket screws?
Answer: Cold-headed socket screws offer superior mechanical properties due to work hardening, better material utilization, improved fatigue resistance, and more consistent dimensional accuracy. The unbroken grain flow in cold-headed parts provides enhanced strength compared to machined alternatives.
Q12: Can you provide socket screws with metric fine threads?
Answer: Yes, we manufacture Brass socket screws with both standard and fine metric threads. Fine thread options include M6×0.75, M8×1.0, M10×1.25, and M12×1.25. Fine threads provide better vibration resistance and are ideal for thin-wall applications or where higher preload is required.
Three Decades of Global Experience: With over 30 years of experience in precision fastener manufacturing, we have developed deep expertise in Brass socket screw production. Our engineering team has worked with customers across six continents, understanding diverse application requirements and regional standards. This extensive experience enables us to provide optimal solutions for complex fastening challenges.
Advanced Manufacturing Technology: We invest continuously in state-of-the-art manufacturing equipment and technology. Our facility houses the latest CNC machining centers, automated inspection systems, and quality control equipment. This technological advancement ensures consistent product quality, improved productivity, and competitive pricing for our customers.
Flexible Customization Capabilities: Unlike many suppliers who offer only standard products, we excel in customization. Our in-house tooling department can create specialized tooling for unique dimensions, head configurations, or socket designs. We work closely with customers from initial concept through production, providing engineering support throughout the development process.
Superior Customer Communication: Our customer service team includes qualified engineers who understand technical requirements and can provide detailed technical support. We maintain clear communication throughout the order process, providing regular updates on production status, shipping schedules, and any potential issues. Multiple communication channels including email, phone, and WhatsApp ensure accessibility across different time zones.
Faster Turnaround Times: Our streamlined production processes and strategic inventory management enable faster delivery compared to many competitors. We maintain stock of common sizes for immediate delivery and have optimized our manufacturing processes to minimize production lead times. Emergency production capabilities are available for urgent requirements.
Customer-Branded Packaging: We offer comprehensive custom packaging services including customer logo printing, specific labeling requirements, and branded packaging materials. This service is particularly valuable for distributors and retailers who want to maintain their brand identity throughout the supply chain.
Anti-Tarnish Protection: For applications where maintaining the bright Brass appearance is critical, we provide specialized anti-tarnish packaging with corrosion inhibitor papers and sealed barrier bags. This packaging maintains product appearance during extended storage and transportation.
Export Packaging Expertise: Our export packaging meets international shipping requirements including ISPM-15 compliant wooden packaging, proper documentation, and secure containment systems. We handle all export formalities and provide necessary shipping documentation for seamless international delivery.
Complete Material Traceability: Every batch of Brass socket screws includes complete material traceability from raw material source through final inspection. We maintain detailed records of material heat numbers, processing parameters, and quality test results. This traceability is essential for critical applications and quality management systems.
Third-Party Testing and Certification: We work with accredited testing laboratories for independent verification of material properties and dimensional compliance. Third-party certificates are available for customers requiring independent quality validation for their quality management systems.
"We have been sourcing Brass socket head cap screws from this Indian manufacturer for over 8 years for our marine hardware division. Their consistent quality, competitive pricing, and exceptional customer service have made them our preferred supplier. The technical support team is knowledgeable and responsive, and their ability to customize products to our exact specifications has been invaluable. Delivery times are reliable, and we've never had quality issues with their products. I highly recommend them for anyone needing high-quality Brass fasteners."
- Robert Johnson, Senior Procurement Manager
A type of fastener with a cylindrical head containing an internal hexagonal socket for driving with an Allen key or hex wrench. Also known as Allen screws or hex socket screws.
A manufacturing process where metal is formed at room temperature using high pressure to create the desired shape. This process improves mechanical properties through work hardening.
A cold forming process for creating external threads by pressing and rolling the material rather than cutting. This process strengthens the threads and improves fatigue resistance.
The maximum load that a fastener can withstand without permanent deformation. Typically expressed as a percentage of the ultimate tensile strength.
A designation system for thread fit and tolerance. Class 6g indicates medium fit with standard tolerance for metric threads.
A corrosion process specific to Brass alloys where zinc is selectively removed, leaving a porous copper-rich structure. Dezincification-resistant Brass alloys are available for critical applications.
A chemical treatment process that removes surface contaminants and creates a thin protective oxide layer to enhance corrosion resistance.
A document providing detailed information about material composition, mechanical properties, and compliance with specifications for a specific batch or lot of material.
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Industry-Specific Terms: Marine Brass fasteners, electrical Brass socket screws, architectural Brass hardware, automotive Brass screws, decorative Brass fasteners, non-magnetic socket screws, conductive Brass fasteners, yacht hardware Brass screws, switchgear Brass fasteners, instrument panel Brass screws
Technical Specifications: M6 Brass socket screws, M8 Brass hex socket screws, M10 Brass allen key screws, metric Brass socket head cap screws, fine thread Brass socket screws, low profile Brass socket screws, high torque Brass fasteners, precision ground Brass screws
