ISO 8749

The ISO 8749 standard, developed by the International Organization for Standardization (ISO), specifies the method for determining the breaking torque of internal socket-head screws. This test is critical for industries that rely on fasteners for mechanical assemblies, as it evaluates the strength and durability of these screws under torque stress. Understanding the breaking torque helps manufacturers ensure that their fasteners can withstand the forces applied during assembly and operation.

The primary purpose of ISO 8749 is to establish a standardized method for assessing the mechanical limits of socket-head screws by measuring the torque required to break them. This provides manufacturers with valuable data regarding the screw's maximum load capacity, ensuring the reliability and safety of mechanical connections in various applications, from automotive to industrial equipment.

In the ISO 8749 test, a controlled torque is applied to the internal socket-head screw using a calibrated torque tester. The torque is gradually increased until the screw breaks, and the breaking torque is recorded. This method provides insights into the quality and strength of the screw material, helping to prevent mechanical failures caused by insufficient fastener strength.

Complying with ISO 8749 ensures that fasteners are tested to meet international standards, reducing the risk of mechanical breakdowns in critical applications. It also enhances product reliability, reduces maintenance costs, and ensures the safety of equipment and structures that rely on high-performance fasteners.

At Pacorr, we provide precise torque testing solutions that comply with the ISO 8749 standard, enabling manufacturers to evaluate the breaking torque of internal socket-head screws with accuracy. Our testing equipment helps companies ensure that their fasteners meet stringent quality standards, improving product safety and reliability.