Screw tensile test ISO 898 and other standards

The determination of the modulus of elasticity, the yield strength or the proof stress is essential for a safe, reliable screw connection.

GALDABINI universal testing machines / tensile testing machines and screw clamps and special strain gauges (3rd photo) are ideal for tensile tests on screws and nuts as well as special screws in accordance with ISO 898 and other standards. Due to the flexible connection to a pin system with cross bolts and lock nuts, a wide variety of clamping tools can be used and easily changed. If special screws and fasteners are to be tested, the Tensile testing machine / universal testing machine be equipped with a T-slot plate.

The design of the tensile testing machine and the load cell ensure a centric application of force. This prevents the occurrence of off-center forces and reduces undesirable bending influences on the sample. The screw clamp is made of special steel and undergoes a unique hardening process. The tempering improves the wear behavior and prevents damage to the clamping device when testing high-strength screws and the spontaneous specimen fractures that occur here.

For test control and data acquisition, the Labtest test software enables easy configuration of test parameters and results. For our customers, we provide here in the Download a finished method according to ISO 898 is available for storage, management and analysis.