Silicon Bronze Flanged Bolts

Comprehensive Overview of Silicon Bronze Flanged Bolts

We are a specialized manufacturer and global supplier of Silicon Bronze Flanged Bolts, engineered from C65500 High Silicon Bronze A alloy to provide a superior fastening solution for marine, offshore, and chemical processing industries. These innovative bolts feature an integral flange head that functions as a built-in washer, distributing clamp load over a wider area and eliminating the need for a separate washer. Our flanged bolts are manufactured using precision cold-forming technology, ensuring consistent head-to-shank concentricity, optimal flange flatness, and exceptional mechanical properties. With superior resistance to saltwater corrosion, high tensile strength, and non-sparking safety, silicon bronze flanged bolts offer enhanced reliability and faster assembly in critical applications.

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Silicon Bronze Flanged Bolts – Integrated Fastening Solution

Silicon Bronze Flanged Bolts combine the benefits of a hex bolt and a washer into a single component. The integral flange beneath the bolt head provides a larger bearing surface, reducing surface pressure and preventing damage to connected materials. Manufactured from C65500 silicon bronze, these bolts deliver exceptional performance in corrosive environments while simplifying inventory and installation.

Applications of Silicon Bronze Flanged Bolts

• Marine Construction: Hull plating, deck fastening, and structural connections on ships and boats

• Offshore Platforms: Equipment mounting, structural assemblies, and maintenance applications

• Chemical Processing: Tank fabrication, pipe supporting systems, and equipment assembly

• Water Treatment Plants: Filter systems, valve mounting, and structural connections

• Architectural Metalwork: Permanent outdoor structures and decorative installations

Silicon Bronze Alloy C65500 Specifications

Flanged Bolt Technical Specifications

Standard Sizes: M6 to M24, 1/4″ to 1″ diameter. Lengths from 20mm to 200mm.
Threads: Metric Coarse, Metric Fine, UNC, UNF
Standards: DIN 6921, ISO 4162, ASME B18.2.3.5M
Drive Types: Hex Socket, Phillips, Combination

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Design Features & Benefits

Flange Head Advantages

• Integrated Washer Design: Eliminates separate washers, reducing part count and assembly time

• Increased Bearing Surface: Distributes clamping force over wider area, reducing surface pressure by up to 40%

• Improved Seating: Ensures stable contact on uneven or soft surfaces

• Vibration Resistance: Larger contact area provides better resistance to loosening under vibration

• Material Protection: Prevents damage to soft materials like wood, composites, and plastics

Performance Characteristics

• Corrosion Resistance: Excellent performance in saltwater, chemicals, and industrial atmospheres

• Non-Sparking Safety: Essential for explosive environments and hazardous locations

• Non-Magnetic Properties: Ideal for electrical and sensitive electronic applications

• High Strength-to-Weight Ratio: Strong yet lightweight compared to steel alternatives

• Excellent Fatigue Resistance: Withstands dynamic loading and vibration

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Manufacturing Processes & Quality Control

Our Silicon Bronze Flanged Bolts are manufactured through a precision-controlled process:

1. Material Selection: Certified C65500 silicon bronze wire rod

2. Cold Heading: Multi-stage forming to create flange head and shank

3. Thread Rolling: Precision thread formation using flat-die or planetary rolling

4. Head Finishing: Machining of drive feature (socket or Phillips)

5. Heat Treatment: Stress relieving for dimensional stability

6. Surface Finishing: Deburring and edge radiusing

7. Quality Inspection: Comprehensive dimensional and mechanical testing

Quality Assurance Tests:

• Dimensional Verification: 100% check of flange diameter, thickness, and head dimensions

• Thread Gauging: Go/No-Go thread acceptance testing

• Flange Flatness: Surface plate inspection for flatness and parallelism

• Proof Load Testing: Sample testing to 2x working load limit

• Salt Spray Testing: Corrosion resistance validation per ASTM B117

• Material Certification: Mill Test Certificates for traceability

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Comparison with Standard Hex Bolts

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Frequently Asked Questions (FAQ)

Q1: What are the main advantages of using flanged bolts over standard hex bolts with washers?
Flanged bolts offer faster assembly (one component instead of two), consistent bearing surface, reduced inventory complexity, and superior vibration resistance. The integrated design ensures perfect alignment and eliminates the risk of missing or incorrect washers.

Q2: Can silicon bronze flanged bolts be used in submerged saltwater applications?
Yes, silicon bronze C65500 offers exceptional corrosion resistance in fully submerged saltwater applications. It is widely used for through-hull fittings, propeller shafts, and other permanently submerged marine components.

Q3: What is the typical flange diameter compared to the bolt diameter?
The flange diameter is typically 1.5 to 2 times the nominal bolt diameter. For example, an M10 flanged bolt would have a flange diameter of approximately 15-20mm, providing significantly more bearing surface than a standard hex head.

Q4: Do you offer different head drive types for flanged bolts?
Yes, we manufacture flanged bolts with hex socket (Allen), Phillips, slotted, and combination drives. Hex socket drives are recommended for high-torque applications, while Phillips drives are suitable for general-purpose use.

Q5: Can you supply matching silicon bronze flanged nuts?
While flanged bolts are typically used with standard nuts, we can manufacture matching silicon bronze hex nuts in C65500 alloy. For applications requiring even larger bearing surfaces, we can produce custom flanged nuts to your specifications.

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Why Choose Our Silicon Bronze Flanged Bolts?

• Integrated Design Expertise: Specialized knowledge in flanged bolt manufacturing and application engineering

• Precision Cold Forming: Advanced manufacturing for consistent flange geometry and mechanical properties

• Material Purity: Guaranteed C65500 silicon bronze composition with full certification

• Comprehensive Quality Control: Rigorous testing including dimensional, mechanical, and corrosion performance

• Technical Support: Application engineering assistance for optimal fastening solutions

• Custom Capabilities: Ability to produce special lengths, diameters, and configurations

• Global Certification: ISO 9001:2015 quality management system

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Call to Action – Contact Us Today

Upgrade your fastening systems with high-performance silicon bronze flanged bolts. Contact us for quotations or technical assistance.

• Request a Quote: Email your specifications to sales@jambrass.com for prompt quotation

• Call Directly: +91-22-43449300 / +91-22-43449323 (Monday-Saturday, 9:00 AM – 6:00 PM IST)

• Office Address: 1406, 14th Floor, Dalamal Tower, Nariman Point, Mumbai – 400021, Maharashtra, India

• Factory Address: Plot 10B, GIDC Industrial Estate, Shanker Tekari, Udyognagar, Jamnagar, Gujarat – 361004

• Samples Available: Contact us for evaluation samples

• Technical Consultation: Our engineers are available for application support

We look forward to providing you with the highest quality silicon bronze flanged bolts for your most demanding applications.