Wiha 26390 Precision Hex Driver Set 7 Piece

Product Description

The WIHA 26390 is a 7-piece precision hex driver set designed for fine-tolerance fastening work across a range of small hex sizes from 0.71 mm to 3 mm. Each driver in the set features a tapered handle engineered for rapid rotation, giving technicians the control needed for delicate, repetitive fastening on small components. This set is well-suited for electronics assembly, instrument calibration, HVAC control boards, and other precision applications where standard-size drivers are too large. The set ships in a display box, keeping all seven drivers organized and accessible on the bench or in the field. Total weight is 2.6 pounds.

This hex driver set is used in applications requiring precise torque control on small fasteners, including work on electronic enclosures, control panels, terminal blocks, and instrumentation. The seven included sizes cover the most common small metric hex fastener dimensions encountered in light commercial and residential equipment service. Technicians working on variable-speed drives, low-voltage control boards, and similar equipment will find the full size range useful for a single job.

Key Features

• 7-piece set covering hex sizes: 0.71 mm, 0.89 mm, 1.3 mm, 1.5 mm, 2 mm, 2.5 mm, and 3 mm
• Tapered handle design supports rapid rotation for high-repetition fastening tasks
• Compact metric size range suits precision electronics and instrumentation work
• Display box packaging keeps drivers sorted and ready for bench or field use
• Lightweight set at 2.6 pounds for easy transport in a tool bag or kit

Compatibility

Designed for use with small metric hex-socket fasteners in the 0.71 mm to 3 mm range, typical of precision electronics, control boards, instrumentation panels, and light mechanical assemblies.

Installation Notes

Precision hex drivers are typically used by electricians, HVAC technicians, and instrumentation specialists working on control components and low-voltage assemblies. Always de-energize and lock out equipment before accessing internal fasteners on electrical or HVAC panels. Select the correct hex size to avoid fastener head damage — using an undersized driver on small hex screws is a common cause of stripped sockets. These drivers are intended for hand torque only; do not use with power tools or extension bars.