Phosphor Bronze Fasteners Bolts Nuts Screws Washers

Phosphor Bronze Fasteners, Bronze Screws, Bronze Nuts, Bronze Washers

Welcome to Conex Screws, a trusted name in the manufacturing of high-quality Phosphor Bronze Fasteners. We manufacture and supply from our factory in India  a range of Phosphor Bronze Screws, Phosphor Bronze Nuts, Phosphor Bronze Bolts – set screws, Phosphor Bronze washers, Phosphor Bronze spring washers etc. With years of expertise and commitment to excellence, we deliver Phosphor Bronze fasteners that meet the diverse needs of industries worldwide.

Phosphor Bronze Fasteners overview

Phosphor Bronze is a versatile alloy known for its excellent corrosion resistance, high strength, and wear resistance. Phosphor Bronze Fasteners are widely used in environments requiring durability, reliability, and superior performance under challenging conditions.

Types of Phosphor Bronze Fasteners

We manufacture a wide range of Phosphor Bronze Fasteners, including:

• Phosphor Bronze Bolts: Hex bolts, carriage bolts, U-bolts, eye bolts, and flange bolts.
• Phosphor Bronze Nuts: Hex nuts, lock nuts, cap nuts, and wing nuts.
• Phosphor Bronze Screws: Machine screws, Pan head screws, CSk head Flat head screws, self-tapping screws, wood screws, and sheet   metal screws.
• Phosphor Bronze Washers: Flat washers, spring washers, and custom washers.
• Phosphor Bronze Studs: Threaded rods and double-ended studs.
• Phosphor Bronze Special Fasteners: Custom designs as per client requirements.

Grades of Phosphor Bronze Fasteners

Our fasteners are available in various grades to suit specific applications, including:

• PB102: Known for its excellent electrical conductivity and corrosion resistance.
• PB103: Offers superior strength and wear resistance.
• PB104: Ideal for high-stress applications due to its high fatigue resistance.

Manufacturing Processes

Our state-of-the-art manufacturing processes ensure precision and consistency:

1. Material Selection: Using only the finest quality phosphor bronze alloy.
2. Forging: Shaping the fasteners through precision forging techniques.
3. Thread Rolling: Creating threads with high accuracy.
4. Heat Treatment: Enhancing strength and durability.
5. Surface Finishing: Options include polishing, anodizing, or custom coatings for additional protection.
6. Quality Control: Stringent testing at every stage to meet industry standards.

Sizes and Threads

• Sizes: Standard and custom sizes ranging from M2 to M100 and  1/8″ – 4″
• Thread Types: Metric, UNF, UNC, BSW, and custom threading as per specifications.

Industries We Serve

Phosphor Bronze Fasteners are essential in numerous industries, such as:

• Marine: Corrosion-resistant fasteners for marine environments.
• Electrical: Components for high-conductivity applications.
• Aerospace: Lightweight and durable solutions.
• Automotive: High-performance fasteners for critical applications.
• Oil & Gas: Resistant to harsh chemicals and extreme conditions.
• Construction: Reliable solutions for structural applications.

Range of Applications

Our Phosphor Bronze Fasteners find use in:

• Electrical connections and terminals
• Machinery and equipment assembly
• Structural and load-bearing applications
• Precision instruments

Standards and Certifications

Our fasteners comply with international standards, including:

• ISO: Ensuring global quality benchmarks.
• ASTM: Adherence to material and testing standards.
• DIN Standards:
  • DIN 933: Hex bolts with full thread from Phosphor Bronze and Silicon Bronze .
  • DIN 931: Hex bolts with partial thread.
  • DIN 125: Flat washers. Phosphor Bronze and Silicon Bronze
  • DIN 127: Spring lock washers from Phosphor Bronze and Silicon Bronze
  • DIn 85, 84 Machine screws from Phosphor Bronze and Silicon Bronze
• BS Standards:
  • BS 4320: Flat and spring washers from Phosphor Bronze and Silicon Bronze .
  • BS 1083: Bolts, screws, and studs from Phosphor Bronze and Silicon Bronze .
• ASME Standards:
  • ASME B18.2.1: Bolts and cap screws.
  • ASME B18.3: Socket cap screws.

  • Fastener Type	Standard	Description
    Hexagon Head Bolts	– DIN 933/931 – ISO 4014/4017 – ASME B18.2.1	Full/Partial thread hex bolts
    Socket Head Cap Screws	– DIN 912 – ISO 4762 – ASME B18.3	High-strength socket head screws
    Machine Screws	– DIN 84/85 – ISO 1207 – ASME B18.6.3	Slotted/Cross recess head screws
    Hexagon Nuts	– DIN 934 – ISO 4032 – BS 3692	Standard hex nuts
    Lock Nuts	– DIN 985 – ISO 7040 – BS 4929	Nylon insert lock nuts
    Plain Washers	– DIN 125 – ISO 7089 – BS 4320	Standard flat washers
    Spring Washers	– DIN 127 – ISO 7090 – BS 4464	Split spring lock washers
    Threaded Rods	– DIN 975/976 – ISO 8765 – ASME B18.31.3	Continuous thread studs
    Eye Bolts	– DIN 580 – ISO 3266 – BS 4278	Lifting eye bolts
    Wing Nuts	– DIN 315 – ISO 1234 – BS 4928	Hand-tightening wing nuts

Why Choose Us?

1. Custom Solutions: Tailored fasteners for specific requirements.
2. Global Reach: Serving industries across the globe.
3. Unmatched Quality: Products crafted to exceed industry standards.
4. Sustainable Practices: Eco-friendly manufacturing processes.
5. On-Time Delivery: Reliable supply chain to meet tight deadlines.

Q1: What are Phosphor Bronze Fasteners?
A: Phosphor Bronze Fasteners are corrosion-resistant, high-strength fasteners made from Phosphor Bronze alloys. They include Bronze Screws, Bronze Nuts, Bronze Washers, and other threaded fasteners used in marine, electrical, and industrial applications. These fasteners offer excellent wear resistance, fatigue strength, and non-magnetic properties.

Q2: What makes Phosphor Bronze ideal for fasteners?
A: Phosphor Bronze is widely used for fasteners due to its:

• High Corrosion Resistance – Ideal for marine, electrical, and chemical applications.
• Excellent Mechanical Strength – Withstands high loads and stress.
• Superior Wear and Fatigue Resistance – Ensures long-term performance.
• Good Electrical Conductivity – Suitable for electrical grounding and connections.
• Non-Sparking and Non-Magnetic Properties – Safe for hazardous environments.

Q3: What are the key applications of Phosphor Bronze Fasteners?
A: Phosphor Bronze fasteners are widely used in:

• Marine and Shipbuilding – Corrosion-resistant fastening for boats and offshore structures.
• Electrical Industry – Used in switchgear, grounding systems, and power transformers.
• Aerospace and Defense – High-strength fasteners for aircraft and military equipment.
• Oil and Gas Industry – Non-sparking nuts and bolts for explosive environments.
• Chemical Processing Plants – Corrosion-resistant washers and nuts for pipeline connections.
• Automotive and Railways – Heavy-duty screws and fasteners for durable assembly.

Q4: What types of Bronze Fasteners are available?
A: We manufacture a wide range of Bronze fasteners, including:

• Bronze Screws – Machine screws, wood screws, self-tapping screws.
• Bronze Nuts – Hex nuts, lock nuts, flange nuts, cap nuts.
• Bronze Washers – Flat washers, spring washers, lock washers.
• Bronze Bolts – Hex bolts, carriage bolts, U-bolts, eye bolts.
• Bronze Studs – Fully threaded and double-ended studs.
• Bronze Anchors – Expansion anchors, wedge anchors, and drop-in anchors.

Q5: What are the available grades of Phosphor Bronze used for fasteners?
A: Common Phosphor Bronze grades used for fasteners include:

• C51000 (5% Phosphor Bronze) – High wear resistance, used in electrical components.
• C52100 (8% Phosphor Bronze) – High tensile strength, suitable for marine and aerospace applications.
• C54400 (Leaded Phosphor Bronze) – Superior machinability for precision fasteners.
• C90700 (Tin Bronze) – Used in high-load applications.
• C86300 (Manganese Bronze) – High-strength alloy for heavy-duty fasteners.

Q6: What thread types are available for Bronze Screws and Bronze Nuts?
A: We manufacture fasteners with various thread types, including:

• Metric Threads (M4 to M42) – Standard for global applications.
• UNC (Unified National Coarse) Threads – Used in North America.
• UNF (Unified National Fine) Threads – Provides better fastening in high-vibration environments.
• BSW (British Standard Whitworth) Threads – Traditional British standard.
• Acme Threads – Used for lead screws and heavy-duty applications.
• Custom Threads – Manufactured as per customer specifications.

Q7: What are the available finishes and coatings for Phosphor Bronze Fasteners?
A: We provide various surface treatments to enhance durability and corrosion resistance, including:

• Plain Bronze Finish – Retains natural corrosion resistance.
• Nickel Plating – Provides extra hardness and oxidation resistance.
• Tin Plating – Enhances electrical conductivity for electrical fasteners.
• Silver Plating – Ideal for high-performance electrical applications.
• Passivation – Improves resistance to tarnishing and oxidation.

Q8: How are Phosphor Bronze Fasteners manufactured?
A: Our Bronze Fasteners are produced using advanced manufacturing processes:

• CNC Machining – Precision threading and shaping.
• Hot Forging and Cold Heading – Producing high-strength bolts and studs.
• Thread Rolling – Ensures high-tolerance threading.
• Casting and Stamping – Used for complex-shaped fasteners.
• Heat Treatment – Enhances strength and durability.

Q9: How are Phosphor Bronze Fasteners tested for quality?
A: Our fasteners undergo strict quality checks, including:

• Material Composition Testing – Ensures alloy purity.
• Thread Inspection – Verified using precision gauges.
• Dimensional Accuracy Checks – Using CMM and micrometers.
• Salt Spray Testing – Ensures corrosion resistance.
• Tensile and Shear Strength Testing – Confirms mechanical durability.

Q10: Are Phosphor Bronze Fasteners RoHS and REACH compliant?
A: Yes, our Phosphor Bronze Fasteners comply with RoHS and REACH regulations, ensuring they are free from hazardous substances.

Q11: Can you manufacture custom Phosphor Bronze Fasteners?
A: Yes, we specialize in custom Bronze Fasteners, including specific thread sizes, lengths, plating options, and unique designs for specialized applications.

Q12: What is the minimum order quantity (MOQ) for Bronze Screws, Bronze Nuts, and Bronze Washers?
A: The MOQ depends on size and customization, and we cater to both small prototype batches and large-scale production.

Q13: Do you provide bulk orders and international shipping?
A: Yes, we supply bulk orders worldwide, offering secure packaging and efficient logistics for timely delivery.

Q14: Can I request a sample before placing a bulk order?
A: Yes, we provide samples for evaluation to ensure the design and quality meet your specifications before full-scale production.

Q15: How can I request a quote for Phosphor Bronze Fasteners?
A: You can request a custom quote by providing:

• Material specification (Bronze grade required)
• Thread type and size
• Length and diameter
• Plating or finish preference
• Quantity required
• Technical drawings or CAD files (if available)

Q16: Why choose your company for Phosphor Bronze Fasteners?
A: We are a leading manufacturer offering:

• High-quality Bronze materials and precision machining.
• Custom design and prototyping services.
• Advanced CNC and forging capabilities.
• ISO-certified quality control and compliance.
• Competitive pricing and fast global shipping.