ISO 16047 Torque Tests of Fasteners

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ISO 16047 specifies the conditions for carrying out torque/clamp force tests on threaded fasteners and related parts. It is applicable, basically, to bolts, screws, studs and nuts made of carbon steel and alloy steel, whose mechanical properties are specified in ISO 898-1, ISO 898-2 or ISO 898-6, having ISO metric threads with thread sizes M3 to M39. It is also applicable to the combination of other externally and internally threaded fasteners with a triangular ISO thread according to ISO 68. It is not applicable to set screws and similar threaded fasteners that are not under tensile stresses, nor to screws which form their own mating thread or threaded fasteners having additional self-locking features.

A torque-testing machine is required, capable of applying tightening torque or rotation on nut or bolt head either automatically or manually. Give our test engineers a call today for help configuring the best test machine and accessories according to ISO 16047.