Wera 847 Hex Shank Tapping Drill Bit

The Wera 847 HSS Combined Tapping Drill Bit in 3.3mm combines drilling, tapping and deburring into a single operation, cutting an M4 thread with precision. This size is well-suited to general metalworking, light fabrication and engineering applications where M4 fixings are commonly used.

Constructed from high speed steel (HSS), the bit delivers excellent durability thanks to its finely-tuned material elasticity. The superb centring properties ensure the bit seats accurately on first contact, whilst perfect chip removal keeps the work area clean and reduces the risk of jamming. The ¼" hexagonal shaft provides a secure, high-torque connection to compatible ¼" drive holders conforming to DIN ISO 1173-D 6.3, ensuring efficient energy transfer throughout the operation.

Features and Benefits:
• HSS construction for outstanding durability
• ¼" hex shaft for very good power transfer
• Finely-tuned material elasticity for great durability
• Excellent centring properties for accurate drilling
• Perfect chip removal for a clean, efficient cut
• Low tilt risk for controlled working
• Precise return movement

Contents:
847 HSS Combined Tap Bit, 3.3mm x 39mm x M4

Specifications:
Drill Diameter: 3.3mm
Overall Length: 39mm
Thread Size: M4
Drive: ¼" Hexagon (DIN ISO 1173-D 6.3)
Material: HSS