Connections under tension

Inputs for Screw Fasteners

Diameter def

The cross-sectional diameter of the smooth shank of the screw, in mm.

Screw length

The length of the screws, in mm.

Characteristic tensile strength fu,k

The characteristic tensile strength fu,k of the screws, in MPa.


This box has to be checked if predrilling is performed.

Note that predrilling is mandatory in a number of design cases.

Rope effect

This box has to be checked if the rope effect is to be taken into account in the determination of the load carrying capacity of the fasteners, according to Subclause 8.2.2(2).

Characteristic capacity Fax, Rk

The characteristic axial withdrawal capacity of the fastener, in N.