Steel Properties of Self-tapping screws

Self-tapping screw, Johansen model, steel properties, timber, wood. In general, the European Yield Model is used to design joints with laterally loaded screws, where the tensile capacity Ft and the yield moment My are necessary input parameters when it comes to steel properties. The speed of screw development is so immense that the current Eurocode 5 (2010) does not include bespoke rules for self-tapping screws, with the exception of few specific rules concerning axially loaded screws. Indeed, in order to design joints with screws, most input parameters (e.g. Ft, My) must be taken from technical documentation of the screws.