840/4 Z Tamper-proof Hex-Plus BO bits, 4 x 89 mm, Wera 05059643001

840/4 Z Tamper-proof Hex-Plus BO bits, 4 x 89 mm

Tough viscous Wera bits for hexagon socket screws for universal use. The Hex-Plus profile offers a greater contact surface in the head of the screw. The notching effect is therefore reduced to a minimum and damage to the screw head more or less eliminated. 1/4" hexagon, suitable for holders as per DIN ISO 1173-F 6.3. Hexagon socket BO screws have a protruding pin in their drive profile. This prevents any unauthorised loosening since the "normal" hex tools cannot move these screws. 1/4" hexagon, suitable for holders as per DIN ISO 1173-F 6.3.

• For socket head screws
• Ductile and tough for hard materials
• Hex-Plus allows socket head screws to live longer
• 1/4" hexagon drive (Wera connecting series 4)
• Suitable for AEG, ARO, Atlas-Copco, Biax, Black & Decker, Bosch, Buckeye Tools etc.
• For hexagon socket screws with safety pin.
• Hexagon socket screws are a problem, because the contact surfaces that transfer 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 larger contact surfaces 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!
• Tough-absorbing Wera bits (Z) prevent any premature breakage of the drive tip.