Flat impact screwdriver EPM E-400-0366 HEX 6×150 mm

EPM E-400-0366 HEX 6×150 mm is a flat (slotted) impact screwdriver designed for applying mechanical shock to slotted fasteners. The tool features a 6 mm hex shank and a 150 mm long blade, enabling use with an impact driver or striking with a hammer to loosen seized screws and bolts. Constructed for workshop, construction and maintenance applications, this screwdriver transfers force through the shaft to the tip while the hex shank provides secure seating in impact-compatible holders.

Advantages

The impact-capable design allows for single-handed positioning while receiving percussive blows, reducing cam-out on worn slotted heads. The HEX shank improves grip in impact drivers and quick-change chucks, providing better torque transfer than round shanks. With a longer 150 mm blade, the tool reaches recessed fasteners and offers additional leverage when turning stubborn screws. Materials and heat treatment provide a balance of tip hardness and shaft toughness to resist deformation under impact loads.

Suitable for

• Loosening or tightening slotted screws that are rusted, painted over, or otherwise seized
• Workshop and garage repair tasks where percussive force is required
• Construction and maintenance operations involving metal or wooden assemblies
• Use with impact drivers, impact wrenches with appropriate adapters, or manual hammer strikes

Key specifications

• Tip type: flat / slotted
• Shank type: hex
• Shank width: 6 mm
• Blade length: 150 mm
• Drive compatibility: impact drivers and manual impact use
• Application: striking/impact use for stubborn fasteners

How to use

Select the correct screwdriver tip width that matches the slot in the fastener to minimize slipping. Insert the hex shank into an impact driver chuck or hold the handle and align the tip with the screw slot if using manual hammer strikes. Apply steady axial force while delivering controlled percussive blows or operating the impact driver at low-to-moderate speed. After initial shock loosens the fastener, switch to steady turning to fully remove or tighten the screw. Inspect the tip and fastener head after use and replace the tool if the tip shows signs of excessive wear.

Usage recommendations

Use appropriate personal protective equipment such as safety glasses and gloves when striking with a hammer. Avoid excessive angle on the tip to reduce cam-out and damage to the screw head. For repeated impact use with power tools, ensure the holder or chuck is rated for hex shanks and impact applications to maintain secure engagement and safe operation.