Bronze Machine Screws, Bronze Screws, Silicon Bronze Screws –
Bronze Machine Screws, Bronze Screws, and Silicon Bronze Machine Screws, Phosphor Bronze Screws are precision-engineered fasteners manufactured from various Bronze alloys. They are widely used in industrial, marine, electrical, and structural applications due to their superior strength, corrosion resistance, and aesthetic appeal. These screws are ideal for environments exposed to moisture, chemicals, and extreme temperatures, making them a preferred choice over standard steel and stainless steel fasteners in certain industries.
Conex Screws is a premier manufacturer and supplier of Bronze Screws, Bronze Machine Screws, and Bronze Fasteners based in India. Our extensive range, including Phosphor Bronze Fasteners, Phosphor Bronze Screws, Silicon Bronze Screws, and Silicon Bronze Fasteners, is highly regarded worldwide.Bronze machine screws are robust, corrosion-resistant fasteners extensively used in marine, industrial, electrical, and heavy machinery applications. Renowned for their superior strength, excellent conductivity, and resilience against wear and harsh conditions, these screws ensure long-term reliability in electrical panels, mechanical assemblies, and marine structures.
We offer Bronze Machine Screws, Phosphor Bronze Screws and Silicon Bronze Screws in various material grades, head styles, thread configurations, and drive types, guaranteeing precision engineering and adherence to international standards.
Material Grades for Bronze Machine Screws
Bronze machine screws are made from different grades of bronze alloys, each offering specific mechanical and chemical properties. The most common grades used include:
- Silicon Bronze (C65100, C65500)
- Composition: 95-98% Copper, 1-3% Silicon
- Strength: High tensile strength and excellent corrosion resistance
- Applications: Marine, electrical, and architectural applications
- Phosphor Bronze (C51000, C52100)
- Composition: Copper, Tin (3.5-10%), Phosphorus (~0.3%)
- Strength: Good wear resistance, fatigue resistance, and high elasticity
- Applications: Aerospace, electrical connectors, and mechanical components
- Aluminum Bronze (C95400, C95800)
- Composition: Copper, Aluminum (5-12%), Iron, and Nickel
- Strength: Excellent strength and corrosion resistance in aggressive environments
- Applications: Heavy machinery, oil & gas industry, and marine applications
- Nickel Aluminum Bronze (C63000, C63200)
- Composition: Copper, Nickel (5-10%), Aluminum (3-5%)
- Strength: High strength, anti-galling, and superior resistance to saltwater
- Applications: Marine hardware, valve components, and aerospace applications
Manufacturing Processes for Bronze Screws, Silicon Bronze Machine Screws
The production of bronze machine screws involves several precision manufacturing techniques to ensure high-quality performance. These processes include:
1. Cold Forging
- Cold forging is used to shape the screw heads and threads by applying high pressure at room temperature. This is the primary manufacturing process for machine screws from a cold heading quality (CHQ) Bronze wire- Silicon Bronze wire.
- Benefits include improved mechanical properties, precise tolerances, and superior surface finish.
2. Hot Forging
- Involves heating the bronze to a specific temperature before forming.
- Improves ductility and allows for the production of larger screws with complex geometries.
3. CNC Machining
- Used for precision machining of threads and intricate screw features.
- Provides high accuracy and consistent quality.
4. Thread Rolling
- A cold-working process that forms the threads by rolling the screw blank between dies.
- Enhances thread strength and fatigue resistance.
5. Heat Treatment
- Improves mechanical properties such as hardness and tensile strength.
- Stress-relief annealing is commonly used for bronze machine screws.
Types of Bronze Machine Screws, Silicon bronze Machine Screws
| Standard | Type | Head Style | Drive Type |
|---|---|---|---|
| DIN 85 | Bronze and Silicon Bronze Pan Head Screws | Pan Head | Slotted |
| DIN 84 | Bronze Cheese Head Screws Silicon Bronze Cheese Head Screws | Cheese Head | Slotted |
| DIN 963 | Bronze Countersunk (CSK) Screws Silicon Bronze CSK Screws | Flat Countersunk | Slotted |
| DIN 965 | Countersunk Screws | Flat Countersunk | Phillips |
| DIN 7985 | Raised Pan Head Screws of Bronze | Pan Head | Phillips |
| DIN 966 | Bronze Raised Countersunk Screws | Raised CSK | Phillips |
| ASTM B16 | Bronze Hex Screws Hex Head Set Screws Silicon Bronze Hex Head Screws, Hex Silicon Bronze Bolts | Hex Head | Hex Drive |
| DIN 933 | Bronze Hex Head Bolts Silicon Hex Head Bolts Phosphor Bronze Hex Bolts | Hex Head | Hex Drive |
| ISO 7045 | Bronze Phillips Head Screws Silicon Bronze Phillips Head Screws | Pan Head | Phillips |
Size Chart for Bronze Machine Screws
Below is a standard size chart for bronze machine screws:
| Screw Size | Thread Pitch (mm) | Length (mm) | Head Type |
|---|---|---|---|
| M3 | 0.5 | 6-50 | Flat, Pan, Round |
| M4 | 0.7 | 6-60 | Flat, Pan, Round |
| M5 | 0.8 | 8-70 | Flat, Pan, Hex |
| M6 | 1.0 | 10-80 | Flat, Pan, Hex |
| M8 | 1.25 | 12-100 | Hex, Socket |
| M10 | 1.5 | 15-120 | Hex, Socket |
Thread Types on Bronze Machine Screws
Bronze machine screws are available in various thread types based on industry standards:
- Unified Thread Standard (UNC/UNF) – Common in North America
- Metric ISO Threads (M) – Used worldwide in engineering applications
- Acme Threads – For high-load applications
- Whitworth Threads (BSW) – Used in British engineering
- Machine Cut vs. Rolled Threads
- Rolled threads are stronger due to work hardening during the manufacturing process.
- Machine-cut threads offer precise tolerances.
Tolerances and Standards
Bronze machine screws are manufactured according to international standards to ensure consistency and compatibility across applications.
- ISO 898-1 – Mechanical properties of fasteners
- ASTM B98 – Specification for copper-silicon alloys
- DIN 933, DIN 931 – European standard for hex screws
- BS 2874 – British standard for copper alloys
Industries Using Bronze Machine Screws
Bronze machine screws are widely used across various industries due to their excellent mechanical and corrosion-resistant properties.
1. Marine Industry
- Used in boat construction, shipbuilding, and offshore equipment
- Resistant to saltwater corrosion
2. Electrical Industry
- Used in electrical terminals, grounding screws, and switchgear applications
- Excellent conductivity and oxidation resistance
3. Aerospace Industry
- Used in aircraft electrical connectors and critical fastenings
- Provides reliability in extreme temperatures
4. Heavy Machinery and Industrial Equipment
- Applied in hydraulic systems, industrial pumps, and heat exchangers
- Withstands heavy loads and mechanical stress
5. Architectural Applications
- Used in decorative fixtures, antique restorations, and historical buildings
- Provides aesthetic appeal and longevity
Bronze machine screws ,Phosphor Bronze Screws, Bronze Screws and Silicon Bronze Machine Screws, are highly valued in industries requiring superior corrosion resistance, strength, and durability. With multiple grades, manufacturing processes, and applications, these screws play a crucial role in marine, electrical, aerospace, and industrial settings. Their precise engineering and material properties make them an excellent choice for fastening solutions in demanding environments. We also offer Bronze Washers, Bronze Flanged Bolts , Silicon Bronze Hex Nuts, Bronze Socket head Cap Screws and Phosphor Bronze Screws and Fasteners.
For custom Bronze machine screws, Bronze Screws, Silicon Bronze Screws requirement, consult with us Conex Screws- India’s top manufacturer to ensure the right material, thread type, and finish for your application.
Q & A- for Bronze Machine Screws, Phosphor Bronze Screws, Bronze Screws, and Silicon Bronze Machine Screws
Q1: What are Bronze Machine Screws and where are they used?
A: Bronze Machine Screws are precision-engineered fasteners made from high-strength Bronze alloys, designed for applications requiring excellent corrosion resistance and durability. These screws are widely used in marine hardware, electrical applications, construction, and industrial machinery where exposure to moisture and harsh environments is common.
Q2: What is the difference between Phosphor Bronze Screws and Silicon Bronze Screws?
A: Phosphor Bronze Screws are made from an alloy of Bronze that includes phosphorus and tin, offering high wear resistance, fatigue strength, and electrical conductivity. They are commonly used in electrical terminals, connectors, and industrial applications requiring non-magnetic properties.
Silicon Bronze Screws, on the other hand, contain copper, silicon, and small amounts of manganese, nickel, or iron. They are known for superior corrosion resistance, high strength, and excellent thermal conductivity, making them ideal for marine environments, boat building, and outdoor structural applications.
Q3: Why should I choose Bronze Screws over Stainless Steel Screws?
A: Bronze Screws provide better corrosion resistance in saltwater and chemical environments compared to Stainless Steel Screws. Additionally, Silicon Bronze Screws offer excellent resistance to oxidation and stress corrosion cracking, making them a preferred choice for marine, electrical, and outdoor structures.
Q4: Are Phosphor Bronze Screws suitable for electrical applications?
A: Yes, Phosphor Bronze Screws have excellent electrical conductivity and fatigue resistance, making them highly suitable for electrical terminals, switchgear components, circuit breakers, and transformers. They are non-magnetic and provide reliable performance in high-load electrical applications.
Q5: What are the key properties of Silicon Bronze Machine Screws?
A: Silicon Bronze Machine Screws offer:
- Superior corrosion resistance to seawater, industrial pollutants, and harsh chemicals.
- High mechanical strength and durability.
- Aesthetic appeal with a natural Bronze finish, often preferred in decorative applications.
- Non-magnetic and non-sparking properties, making them ideal for high-risk environments such as explosive atmospheres and electrical enclosures.
Q6: Can Bronze Screws be used in woodworking applications?
A: Yes, Bronze Screws are frequently used in fine woodworking, cabinetry, and boatbuilding. They provide high resistance to splitting and corrosion, making them an excellent choice for hardwood applications and outdoor wooden structures.
Q7: What thread types are available for Bronze Machine Screws?
A: Bronze Machine Screws are available in various thread types, including:
- Unified Thread Standard (UTS) – UNC/UNF
- Metric Threads – ISO Standard
- Self-tapping and self-drilling screws
- Custom thread pitches based on application requirements
Q8: Are Silicon Bronze Machine Screws suitable for saltwater environments?
A: Yes, Silicon Bronze Screws are one of the best fasteners for marine and saltwater environments due to their high corrosion resistance, non-reactivity with seawater, and exceptional strength. They are commonly used in boatbuilding, dock construction, and naval applications.
Q9: What are the size and head style options available for Bronze Screws?
A: Bronze Screws are available in a variety of sizes and head styles, including:
- Flat Head, Pan Head, Round Head, Oval Head, and Hex Head
- Slot Drive, Phillips Drive, Torx Drive, and Allen Drive
- Sizes ranging from M2 to M20 and #2 to 1/2-inch diameter
- Custom dimensions available upon request
Q10: Where can I buy high-quality Bronze Machine Screws, Phosphor Bronze Screws, and Silicon Bronze Screws?
A: We are a leading manufacturer and exporter of Bronze Screws, Phosphor Bronze Screws, and Silicon Bronze Machine Screws from jamnagar, India. Our screws meet ASTM, DIN, ISO, and JIS standards and are available in customized sizes, head styles, and coatings to suit your application requirements. Contact us today for a quote!
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