Cold heading process is one of the new processes for pressure machining of less or no cutting
metal. It is a processing method that utilizes the plastic deformation of metal under the action of
external forces, and with the aid of molds, redistributes and transfers the volume of metal to form
the required parts or blanks. The cold heading process is most suitable for producing standard
fasteners such as bolts, screws, nuts, rivets, and pins.etc
Hexagon Socket Chicago Screws (also known as Allen Drive Sex Bolts, Hex Head Binding Posts, or Socket Head Barrel Nuts) are high-performance, two-piece fasteners designed for precision assembly applications requiring secure fastening with a flush, low-profile finish. These industrial-grade fasteners consist of two key components:
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Male Screw Component
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Features a countersunk flat head with internal hexagon (Allen) socket drive
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Precision-machined to ISO 4762 standards for perfect hex key engagement
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Available in standard and metric drive sizes (0.7mm to 10mm)
- Hexagon socket Chicago screws
Key Technical Features:
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Superior Torque Transmission: Hex socket design eliminates cam-out during high-torque installation (up to 250 in-lbs)
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Precision Alignment: Tight manufacturing tolerances (DIN 7991 compliant) ensure perfect fit
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Material Options: A2/A4 stainless steel, alloy steel (Grade 8.8/10.9), brass, and aluminum
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Surface Treatments: Black oxide, electroless nickel, zinc-nickel, and passivated finishes
Performance Advantages:
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Maximum Security: Hex drive provides superior resistance to tampering compared to Phillips or slotted designs
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Vibration Resistance: Optional thread-locking features prevent loosening in dynamic environments
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Reusability: Can be disassembled and reassembled without performance degradation
These professional-grade fasteners are ideal for applications demanding maximum torque transfer, security, and precision alignment while maintaining a clean, flush-mounted appearance. The internal hex design provides superior performance in high-stress environments where other drive types may fail. Available with full technical documentation and material certifications for critical applications.
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