Brass Shear Bolts

El proceso de estampado en frío es uno de los nuevos procesos de mecanizado a presión de menor o ningún corte
metal. Es un método de transformación que utiliza la deformación plástica del metal bajo la acción de
fuerzas externas y, con ayuda de moldes, redistribuye y transfiere el volumen de metal para formar
las piezas o formatos necesarios. El proceso de estampación en frío es el más adecuado para producir piezas estándar.
elementos de fijación como pernos, tornillos, tuercas, remaches, pasadores, etc.

Brass pernos de cizallamiento are specialized fasteners designed to break or “shear” at a predetermined torque or under specific stress conditions. They are commonly used in applications where over-tightening could damage components or where tamper resistance is needed. Here’s a detailed description:

Features of Brass Shear Bolts:

1. Material:

   • Made from brass (often leaded for machinability), offering corrosion resistance, electrical conductivity, and non-sparking properties.

   • Brass is softer than steel, making it ideal for shear applications.

2. Design:

   • Shear Groove: A pre-weakened section (neck) near the head that snaps when torque exceeds a set limit.

   • Hex or Torx Head: Allows tightening until the bolt shears, leaving a smooth, tamper-resistant break surface.

   • Tipo de hilo: Typically machine threads (e.g., metric or UNC/UNF) for secure fastening before shearing.

3. Función:

   • Torque-Limiting: Prevents overloading by breaking at a calibrated torque.

   • Tamper-Proof: Once the head shears off, the bolt cannot be easily removed without specialized tools.

4. Aplicaciones:

   • Electrical Equipment: Grounding connections, busbars (to prevent over-compression).

   • Security Fixtures: Tamper-resistant panels, access covers.

   • Aerospace & Automotive: Critical assemblies requiring precise torque.

   • Plumbing/Gas Systems: Soft metal prevents sparking in flammable environments.

5. Ventajas:

   • Prevents damage from excessive force.

   • Deters unauthorized access.

   • Corrosion-resistant in moist/outdoor environments.

6. Disadvantages:

   • Non-reusable after shearing.

   • Lower shear strength compared to steel bolts.

Common Specifications:

• Normas: DIN, ASTM, or industry-specific (e.g., MIL-SPEC).

• Grades: Varies by alloy (e.g., C360 brass for machinability).

• Shear Torque: Customizable based on groove design and material thickness.

Notas de instalación:

• Use a torque wrench to ensure proper shearing.

• Post-shear, the remaining shank may require a screw extractor for removal.