Bronze Socket Head Screws
Comprehensive Overview of Bronze Socket Head Screws
We are a specialized manufacturer and global supplier of high-strength Bronze Socket Head Screws, engineered for precision applications requiring high torque, compact design, and exceptional corrosion resistance. Our socket head screws are manufactured from premium bronze alloys including C63000 Aluminum Nickel Bronze for maximum strength and durability, C95400 Aluminum Bronze for superior wear and corrosion resistance, and C93200 Bearing Bronze for excellent machinability and bearing properties. These precision fasteners feature a cylindrical head with an internal hexagonal socket that allows for high torque application in confined spaces. With decades of expertise in precision fastener manufacturing, we deliver socket head screws that meet the most demanding specifications for machinery, marine, and chemical processing applications.
Bronze Socket Head Screws – Precision High-Strength Fastening
Bronze Socket Head Screws are precision-engineered fasteners designed for applications requiring high clamping force, reliable performance in corrosive environments, and compact head design. The internal hex socket drive provides superior torque transmission compared to conventional external drive fasteners, while bronze construction ensures excellent corrosion resistance and non-sparking safety. Available in multiple configurations including socket cap screws, button head screws, flat head screws, and set screws.
Applications of Bronze Socket Head Screws
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Machine Tool Industry: Precision machinery, jigs, fixtures, and tooling applications
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Marine Engineering: Pump assemblies, valve actuators, and deck machinery components
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Chemical Processing: Equipment assembly in corrosive chemical plants and refineries
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Pump and Valve Manufacturing: High-pressure assemblies requiring corrosion resistance
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Food Processing Equipment: Machinery where corrosion resistance and cleanability are essential
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Aerospace Components: Non-magnetic fasteners for instrumentation and control systems
Bronze Alloy Specifications for Socket Head Screws
| Bronze Alloy | UNS Designation | Key Properties | Typical Applications |
|---|---|---|---|
| C63000 Aluminum Nickel Bronze | C63000 | Very high strength, excellent corrosion resistance, good machinability | High-stress machinery, pump components, marine hardware |
| C95400 Aluminum Bronze | C95400 | High strength, exceptional wear resistance, excellent corrosion properties | Chemical processing, heavy machinery, wear applications |
| C93200 Bearing Bronze | C93200 | Excellent machinability, good bearing properties, corrosion resistance | General machinery, low-stress applications, bearing surfaces |
Bronze Socket Head Screw Technical Specifications
| Parameter | C63000 (Aluminum Nickel Bronze) | C95400 (Aluminum Bronze) | C93200 (Bearing Bronze) |
|---|---|---|---|
| Tensile Strength (MPa) | 655 – 895 | 620 – 830 | 240 – 380 |
| Yield Strength (MPa) | 275 – 620 | 260 – 550 | 125 – 210 |
| Hardness (HB) | 170 – 240 | 170 – 210 | 70 – 110 |
| Shear Strength (MPa) | 380 – 520 | 360 – 480 | 180 – 240 |
| Corrosion Resistance | Excellent | Excellent | Good |
| Temperature Limit | 260°C | 260°C | 180°C |
Standard Sizes: M3 to M24, #4 to 1″ diameter. Lengths from 6mm to 200mm+.
Threads: Metric Coarse, Metric Fine, UNC, UNF
Socket Sizes: Standard hex key drives according to ISO 10664
Standards: ISO 4762, DIN 912, ASME B18.3, ISO 4026, ISO 4027
Product Range & Specifications
Socket Head Cap Screws
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Head Diameter: 1.5 x nominal diameter
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Head Height: 1.0 x nominal diameter
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Socket Depth: 0.7 x nominal diameter
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Standards: ISO 4762, DIN 912, ASME B18.3
Socket Button Head Screws
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Head Diameter: 1.5 x nominal diameter
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Head Height: 0.75 x nominal diameter
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Applications: Low-clearance applications requiring rounded head
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Standards: ISO 7380, DIN 7380
Socket Flat Head Screws
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Head Angle: 82° or 90° included angle
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Applications: Flush mounting in countersunk holes
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Standards: ISO 10642, DIN 7991
Socket Set Screws
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Point Styles: Cup point, flat point, cone point, oval point, dog point
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Applications: Securing collars, gears, and pulleys to shafts
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Standards: ISO 4026, ISO 4027, ISO 4028, ISO 4029
Manufacturing Processes & Quality Control
Our Bronze Socket Head Screws are manufactured through a precision-controlled process:
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Material Selection: Certified bronze alloy bar stock
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CNC Machining: Precision turning of screw blanks to exact dimensions
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Head Machining: Formation of socket drive feature using specialized tooling
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Thread Rolling: Precision thread formation using flat-die rolling
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Heat Treatment: Solution treatment and aging for high-strength alloys
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Deburring & Finishing: Comprehensive edge breaking and surface finishing
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Quality Inspection: 100% dimensional verification and sample testing
Quality Assurance Tests:
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Dimensional Verification: 100% check of all critical dimensions
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Thread Gauging: Go/No-Go thread acceptance testing to class 6g/6H tolerance
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Socket Drive Inspection: Verification of socket depth, angle, and drive compatibility
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Proof Load Testing: Sample testing to 2x working load limit
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Hardness Testing: Brinell and Rockwell testing to verify mechanical properties
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Material Certification: Mill Test Certificates for full traceability
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Salt Spray Testing: Corrosion resistance validation per ASTM B117
Technical Data & Performance Specifications
Mechanical Properties by Size
| Nominal Diameter | Proof Load (kN) C63000 | Tensile Strength (kN) C63000 | Torque Specification (Nm) |
|---|---|---|---|
| M4 | 8.2 | 12.1 | 4.5 – 5.5 |
| M6 | 12.5 | 18.5 | 12 – 15 |
| M8 | 23.5 | 34.0 | 28 – 35 |
| M10 | 38.5 | 56.0 | 55 – 70 |
| M12 | 57.0 | 82.5 | 95 – 120 |
| M16 | 108.0 | 156.0 | 230 – 290 |
Socket Size Specifications
| Screw Size | Socket Size | Key Engagement | Recommended Torque (Nm) |
|---|---|---|---|
| M4 | 3.0 mm | 4.0 mm | 4.5 – 5.5 |
| M5 | 4.0 mm | 5.0 mm | 8.5 – 10.5 |
| M6 | 5.0 mm | 6.0 mm | 12 – 15 |
| M8 | 6.0 mm | 8.0 mm | 28 – 35 |
| M10 | 8.0 mm | 10.0 mm | 55 – 70 |
| M12 | 10.0 mm | 12.0 mm | 95 – 120 |
Installation Guidelines & Technical Data
Recommended Installation Practices
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Allen Key Selection: Use high-quality, undamaged hex keys of exact size
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Key Engagement: Ensure full key engagement in socket before applying torque
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Torque Control: Use torque wrench for critical applications
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Lubrication: Consider anti-seize compound for high-torque applications
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Clearance Requirements: Maintain adequate clearance for key access
Torque Specifications
| Screw Size | C63000 (Nm) | C95400 (Nm) | C93200 (Nm) |
|---|---|---|---|
| M4 | 4.5 – 5.5 | 4.0 – 5.0 | 2.5 – 3.0 |
| M6 | 12 – 15 | 11 – 14 | 7 – 9 |
| M8 | 28 – 35 | 26 – 32 | 16 – 20 |
| M10 | 55 – 70 | 50 – 65 | 32 – 40 |
| M12 | 95 – 120 | 88 – 110 | 55 – 70 |
Frequently Asked Questions (FAQ)
Q1: What are the advantages of socket head screws over other drive types?
Socket head screws offer higher torque capability, compact head design, better appearance, reduced risk of stripping, and superior performance in confined spaces. The internal drive is protected from damage and contamination.
Q2: Can bronze socket head screws be used in high-temperature applications?
Yes, bronze socket head screws maintain their mechanical properties at elevated temperatures. C63000 and C95400 alloys are suitable for continuous service up to 260°C (500°F), making them ideal for pump, valve, and machinery applications.
Q3: What is the difference between socket cap screws and socket set screws?
Socket cap screws are designed to clamp components together when used with a nut or in a tapped hole, while socket set screws are used to secure a component onto a shaft without a nut, typically using various point styles to grip the shaft surface.
Q4: Do you offer different socket drive types?
While standard hex socket drives are most common, we can also manufacture screws with Torx® drives for higher torque applications and reduced risk of cam-out, particularly in high-strength bronze alloys.
Q5: How does the strength of bronze socket screws compare to steel?
C63000 Aluminum Nickel Bronze provides tensile strength comparable to medium-strength steel fasteners (Grade 5) while offering superior corrosion resistance, non-sparking properties, and excellent resistance to galling and seizing.
Why Choose Our Bronze Socket Head Screws?
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Precision Manufacturing: CNC machining and thread rolling for exact dimensions
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Material Expertise: Optimal bronze alloy selection for specific applications
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Comprehensive Range: Complete selection of socket screw types and sizes
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Quality Assurance: Rigorous inspection and testing with full documentation
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Technical Support: Engineering assistance for application-specific requirements
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Custom Capabilities: Special lengths, diameters, and configurations
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Global Standards Compliance: Manufacturing to international quality standards
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Competitive Pricing: Cost-effective manufacturing without quality compromise
Call to Action – Contact Us Today
Upgrade your precision assemblies with high-performance bronze socket head screws. Contact us for quotations or technical assistance.
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Request a Quote: Email your specifications to sales@jambrass.com for prompt quotation
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Call Directly: +91-22-43449300 / +91-22-43449323 (Monday-Saturday, 9:00 AM – 6:00 PM IST)
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Office Address: 1406, 14th Floor, Dalamal Tower, Nariman Point, Mumbai – 400021, Maharashtra, India
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Factory Address: Plot 10B, GIDC Industrial Estate, Shanker Tekari, Udyognagar, Jamnagar, Gujarat – 361004
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Samples Available: Contact us for evaluation samples
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Technical Consultation: Our engineers are available for application support
We look forward to providing you with the highest quality bronze socket head screws for your most demanding applications.
