Screwdriver Bit Set Makita E-03159 2 pcs PH 3 Security Hex 1/4

The Makita E-03159 screwdriver bit set contains two high-strength bits: a PH3 Phillips head and a 1/4" security hex bit. Manufactured to match professional fastening needs, the set is intended for repeated use in assembly, repair and construction tasks where reliable bit fit and resistance to wear are important. The bits are supplied in compact packaging for convenient storage and transport.

Advantages

Both bits are produced to provide precise engagement with fasteners, reducing cam-out and improving torque transfer. The set combines a common Phillips PH3 with a security hex for tamper-resistant fasteners, offering versatility for different fastening standards. Hardened steel construction and a controlled tip geometry enhance durability and consistent performance under normal workshop and on-site conditions.

Suitable for

• Assembly and disassembly of furniture and fittings
• Maintenance and repair tasks on appliances and equipment featuring PH3 or security hex screws
• Light to medium construction and installation work requiring a PH3 or 1/4" hex security bit
• Use with electric screwdrivers, cordless drills with bit holders, and manual bit drivers

Key specifications

• Number of pieces: 2
• Tip types: PH3 (Phillips), security hex 1/4"
• Shank connection: 1/4" (6.35 mm) hex shank compatible with standard bit holders
• Material: hardened tool steel for wear resistance
• Finish: corrosion-resistant coating for extended service life
• Packaging: compact, portable pack suitable for storage and transport

How to use

Select the bit that matches the screw head profile and insert it into a compatible 1/4" bit holder, screwdriver or drill chuck designed for hex shanks. Ensure the driver is set to an appropriate torque and speed for the fastener and material. Apply steady, axial pressure to maintain engagement while turning to avoid slipping or stripping. For security hex screws, align the bit fully in the recess before applying torque to prevent damage to the screw head or bit tip.

Usage recommendations

Use the PH3 bit for larger Phillips fasteners commonly found in furniture and building fixtures; use the 1/4" security hex bit for tamper-resistant screws. Avoid excessive impact torque beyond the bit's intended application and replace bits showing significant wear or deformation to maintain fastening quality and safety.