840/4 Z bits, 4 x 152 mm
Tough Wera bits for hexagonal socket screws, for universal use. Hex-Plus offers larger contact surfaces in the screw head. The notch effect is reduced to a minimum and the destruction of the screw is nearly eliminated. 1/4" hexagonal, suitable for holding tools as per DIN ISO 1173-D 6.3.
For socket head screws
Hex-Plus allows scoket head screws to live longer
Tough for hard materials
1/4" hexagon drive (wera connecting series 4)
Hexagon socket screws are a problem, because the contact surface that translates the force of the tool to the screw are very narrow. The consequence: the head of the screw can be damaged, usually rounding out the recess. Hex-Plus tools have a larger contact surface to prevent this, driving from the flats of the recess, rather than the corners. Good to know: Hex-Plus tools fit into every standard hexagon socket screw.
Item Nr.: 641-05059634001
