Drill bit Wera 05058108001, HSS, ø0.9 mm, length 30 mm, 1 pc

Wera 05058108001 bit for hexagonal socket screws, designed with Hex-Plus geometry to increase contact surfaces in the screw head and reduce notching. The bit is made for general-purpose use and fits 4 mm hexagonal sockets; it comes as a single 30 mm long piece with a 0.9 mm drill bit diameter.

Advantages

Hex-Plus geometry provides larger contact surfaces in the screw head, reducing cam‑out and minimizing damage to the screw. The bit is tough and suitable for universal applications. Compact size and single-piece supply make it convenient for repair and assembly tasks.

Suitable for

• Driving and removing hexagonal socket screws (4 mm)
• General repair and assembly work
• Use with compatible bit holders, hand drivers, and power tools

Key specifications

• Brand: Wera
• Manufacturer code (MPN): 05058108001
• EAN: 4013288234537
• Bit type: Hex-Plus for hexagonal socket screws
• Hex size: 4 mm
• Drill bit diameter: 0.9 mm
• Length: 30 mm
• Quantity: 1 pc
• Weight: 5 g

How to use

Insert the bit into a compatible bit holder or driver, ensure the tool and bit are properly seated, and apply steady torque when driving or removing hexagonal socket screws. For power tools, set an appropriate torque or use short bursts to avoid over‑tightening. Inspect the screw head and bit for wear after use and replace the bit if it shows significant deformation.

Usage recommendations

Choose the correct hex size (4 mm) and use the bit with matching holders or drivers. For damaged or corroded screw heads, proceed cautiously to avoid further damage; Hex‑Plus geometry reduces but does not eliminate the risk of head deformation under excessive torque.