EASY INTRODUCTION SCREW

摘要

A screw (10) comprising a tip (11); a head (12) for accommodating a tool to rotate the screw (10) around a rotational axis (17) of the screw (10); and a thread (15) extending from the tip (11) towards the head (12), the thread (15) having a thread depth (w) that varies along a length of the screw (10) between a minimum thread depth and a maximum thread depth (wmax), wherein the thread (15) comprises a tip thread portion (18) extending along one half turn or less around the rotational axis (17) of the screw (10) and exhibiting a thread depth increase (Δw1) within the tip thread portion (18) corresponding to at least one half of the maximum thread depth (wmax). Hereby a reduced axial force is needed for starting the entry into a workpiece of the screw.