SPECIALTY COLD-HEADED FASTENERS (M2 TO M22)

Cold-headed fasteners are manufactured using a cold-forming process where metal is shaped under high pressure at room temperature. This method is highly efficient and ideal for producing fasteners with high strength, precision, and unique features. Specialty cold-headed fasteners in sizes ranging from M2 to M22 are used in applications requiring tailored designs, complex geometries, and robust performance.

COLD HEADING PROCESS

Material Selection:

• Metals like carbon steel, stainless steel, aluminum, brass, or exotic alloys are chosen based on application requirements.

Forming:

• Metal blanks are fed into a cold heading machine.
• High-pressure dies and punches deform the material into the desired shape without cutting or machining.

Secondary Operations:

• Threads are added via rolling.
• Heat treatment, plating, or coating may follow to enhance strength and corrosion resistance.

ADVANTAGES OF COLD HEADING

High Strength: Work hardening during the process improves tensile and yield strength.

Material Efficiency: Minimal waste compared to machining.

Cost-Effective for High Volumes: Faster production with less material waste reduces per-unit costs.

Complex Geometries: Ideal for creating intricate or custom shapes.

Dimensional Precision: Tight tolerances for critical applications.

Sizes and Standards

• Specialty fasteners ranging from M2 to M22 cover a wide range of applications, from micro screws to heavy-duty bolts.
• Compliance with standards such as ISO, DIN, ANSI/ASME, or custom specifications.

TYPES OF SPECIALTY COLD-HEADED FASTENERS

Bolts and Screws: Hex head bolts, carriage bolts, shoulder screws, and customized head designs.

Studs: Double-ended or custom-length studs.

Pins:mDowel pins, knurled pins, and custom locking pins.

Rivets: Solid, semi-tubular, or specialty rivets for structural applications.

Threaded Inserts: Custom inserts for metal or plastic assemblies.

MATERIALS USED

Carbon Steel: For general-purpose fasteners.

Stainless Steel: Corrosion resistance for marine, medical, and food-grade applications.

Aluminum: Lightweight and corrosion resistant.

Brass: Electrical conductivity and corrosion resistance.

Exotic Alloys: Titanium, Inconel, or Hastelloy for aerospace, chemical, or high-temperature environments.

APPLICATIONS

Automotive: Engine components, suspension systems, and structural fasteners.

Aerospace: Lightweight, high-strength fasteners for airframes and engines.

Medical: Custom screws and pins for surgical instruments and implants.

Electronics: Micro fasteners for circuit boards and enclosures.

Industrial: High-strength bolts and rivets for heavy machinery.

Construction: Anchors and specialty bolts for structural applications.

FINISHES AND TREATMENTS

Heat Treatment:

• Enhances strength, wear resistance, and durability.

Coatings:

• Zinc, nickel, or cadmium plating for corrosion resistance.
• Black oxide or phosphate for improved aesthetics and reduced friction.

Special Coatings:

• PTFE or ceramic coatings for chemical resistance.

Customization Options

• Head Shapes: Hex, pan, flat, oval, or custom shapes.
• Threads: Metric, Unified, coarse, or fine threads.
• Special Features:
• Knurls, grooves, or slots for locking or gripping applications.
• Custom markings for identification.

ADVANTAGES OF SPECIALTY COLD-HEADED FASTENERS

• Tailored Design: Meets unique application requirements.
• Performance Under Stress: Designed for high loads, extreme temperatures, or corrosive environments.
• Cost Savings: Reduced material waste and lower machining costs.