Hex bit FELO FL02440010 4.0 mm x 25 mm straight hex screwdriver bit

FELO FL02440010 is a straight hex screwdriver bit with a 4.0 mm hex tip and a 25 mm working length. Manufactured for use with compatible bit holders, manual bit drivers and powered screwdrivers, this bit is intended to provide reliable engagement with hex fasteners in assembly, maintenance and repair environments. The compact 25 mm length allows access in confined spaces while maintaining controlled torque transfer to the fastener.

Advantages

The straight 4.0 mm hex geometry ensures accurate seating in hex sockets and minimizes cam-out when used with appropriate drivers. The 25 mm working length offers a balance between reach and control for both handheld and powered operation. Produced by FELO, the bit meets common dimensional and hardness expectations for screwdriver bits, providing consistent fit and repeatable performance when used with compatible holders and drivers.

Suitable for

• Assembly of furniture and fittings with 4.0 mm hex fasteners
• Maintenance and repair of appliances and machinery with compact access
• Electrical and electronics assembly tasks requiring precise engagement
• Use with bit holders, ratchet adapters and cordless screwdrivers

Key specifications

• Tip shape: straight hex (6-sided)
• Tip size: 4.0 mm
• Working length: 25 mm
• Shank type: compatible with standard 1/4" hex bit holders
• Material and finish: hardened steel (manufacturing quality to FELO standards)

How to use

Insert the 1/4" hex shank into a compatible bit holder, chuck or screwdriver. Ensure the bit is fully seated and secured before applying torque. Align the 4.0 mm hex tip with the fastener and apply steady axial pressure while turning the driver to avoid slipping. For powered drivers, use controlled speed and torque settings appropriate for the fastener and material to prevent damage.

Usage recommendations

Inspect the tip for wear or damage before use and replace the bit when signs of rounding or excessive wear appear. Use the bit with matched fastener sizes and suitable torque settings. Store bits in a dedicated holder to protect tips and maintain precise fit.