Testing PROCESSES
Breaking Torque Testing
A Breaking Torque Test measures the torque required to cause failure of a fastener, typically a bolt, screw, or nut. This test evaluates the strength and performance of threaded components under rotational stress and ensures that the fastener can meet or exceed design requirements. Breaking torque is a critical indicator of both material quality and manufacturing consistency, providing confidence that the fastener will perform reliably in service.
How the Test is Performed
Specimen Preparation – The fastener is cleaned and installed in a calibrated torque testing machine.
Torque Application – Rotational force is applied gradually until the fastener either strips, fractures, or otherwise fails.
Monitoring – The applied torque is measured continuously, and the point of failure is recorded.
Result Recording – Maximum torque at failure is documented, along with observations about the mode of failure.
Analysis – Results are compared to design and industry standards to ensure compliance.
Why It is Performed
Breaking Torque Testing is performed to confirm that fasteners can resist rotational forces encountered during installation or in-service conditions. It ensures that threads, material properties, and fastener design are sufficient to prevent stripping, galling, or catastrophic failure.
Verifies threaded component strength under torque
Detects material or manufacturing defects affecting performance
Ensures safe assembly and proper load transfer
Provides data to support engineering validation and quality assurance
Application to Engineered Fasteners
Engineered fasteners are frequently subjected to torque during assembly, maintenance, and service. Accurate breaking torque data ensures:
Proper installation without over-torquing that could damage components
Material and thread integrity under applied loads
Reliable performance in critical applications such as aerospace, oil & gas, nuclear, and defense
Prevention of joint failure due to thread stripping or component fracture
Standards & Compliance
WN Global conducts Breaking Torque Testing in accordance with ASTM, ISO, and customer-specific standards. All testing equipment is calibrated to industry requirements, and tests are performed by qualified personnel to ensure accuracy, repeatability, and traceability. Adhering to these recognized standards demonstrates our commitment to delivering engineered fasteners and machined components that meet the highest levels of performance, reliability, and safety.
Testing Processes
DOING WHATEVER IT TAKES
Putting Manufacturing Exellence Into Practice
The manufacturing processes, testing capabilities, and quality systems featured throughout WN Global support the production of critical components and engineered fastening solutions across demanding industries. Connect with our team to learn how our manufacturing capabilities can support your project requirements.
