Calculators & Converters

Torque and Preload for Customized Geometry and Material

Determine the tightening torque, preload, and surface pressure for hex head, socket head, and countersunk screws. Use this super-flexible calculator for non-standardized bolts and nuts with special geometry and material parameters.

Special bolts with a long, thick shaft and a small thread.

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Fastening Know-How

Solve Your Fastening Challenge

We love to share our knowledge and help you master the science of fastening. Take a deep dive into our white papers that address everyday challenges.

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Independent, valid, and reliable: Get access to our own test laboratories, which can also offer you ISO/IEC 17025-accredited tests when required.

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Need to speed your product's time-to-market? Seeking guidance for fastener selection or fastening joint design? Take a look at our service.