Fixing screw for flat and cruciform operating tool, comprises of head with double recess having straight recess, which extends along axis and cross recess, which is provided to receive cross end of operating tool

摘要

The screw has a head (101) with a double recess having a superposed and straight recess (100) extending along an axis (X) and a cross recess (120) to receive a cross end of an operating tool. The cross recess has two blades (121, 122) extending respectively along two perpendicular axes (X1, Y1). One blade extends to the base of the straight recess. The axis (X1) is shifted in angle with respect to the axis (X).