Round head 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.

Round head shear bolts, also known as pernos de cizallamiento o break-off bolts, are specialized fasteners designed to provide tamper-resistant security. They are commonly used in applications where vandalism, theft, or unauthorized access is a concern, such as in public infrastructure, machinery, electronics, and transportation systems.

Key Features of Round Head Shear Bolts:

1. Shear Mechanism

   • La cabeza del tornillo está diseñada para snap off (shear) once a specific torque is reached during installation, leaving only a smooth, rounded surface behind.

   • This prevents removal with standard tools like wrenches or sockets.

2. Round (Dome) Head Design

   • After shearing, the remaining head is smooth and rounded, making it difficult to grip with pliers or other tools.

   • The dome shape also improves aesthetics and reduces snagging.

3. Tamper-Resistant

   • Removal typically requires specialized tools (e.g., left-handed drill bits, extraction sockets, or shear bolt removers).

   • Some versions have unique drive patterns (such as pin-in-hex or spanner heads) before shearing.

4. Materials & Coatings

   • Often made from hardened steel, stainless steel, or other durable metals.

   • May include corrosion-resistant coatings (zinc plating, black oxide, etc.) for outdoor or harsh environments.

5. Aplicaciones comunes

   • Paneles de seguridad (electrical boxes, meters, traffic signals)

   • Public infrastructure (street signs, benches, railings)

   • Automotive & aerospace (license plates, access panels)

   • Maquinaria industrial (safety guards, equipment housings)

Installation & Removal:

• Instalación: Tightened with a standard tool (e.g., hex key) until the head breaks off.

• Removal: Requires drilling, prying, or specialized extractors, making unauthorized access difficult.