Wiha 26391 Hex Key Set 8 Piece 0.028 to 0.125 in

Product Description

The WIHA 26391 is an 8-piece hex key set covering a size range of 0.028 to 0.125 inches, built from steel for durability in professional trade use. This set gives technicians a compact, organized collection of hex drivers suited for fastener work across HVAC equipment, electrical enclosures, plumbing fixtures, and general mechanical assemblies. The steel construction handles the torque demands of daily service work without deforming the hex profile. HVAC technicians, electricians, plumbers, and pool service pros keep a set like this on hand for accessing set screws, panel fasteners, and equipment covers on the job.

This hex key set is suited for residential and light commercial service environments where a range of small hex fastener sizes is encountered. Typical applications include tightening or loosening set screws on motor shafts, fan blades, and valve stems, as well as accessing fasteners inside control panels and equipment cabinets. The range from 0.028 to 0.125 inches covers the most commonly encountered small hex sizes in HVAC and mechanical service work.

Key Features

• 8 pieces covering hex sizes from 0.028 to 0.125 inches in a single set
• Steel construction for reliable torque transfer and long service life
• Compact size range suited for small set screws and panel fasteners in trade equipment
• Packaged as a complete set for organized field or shop use

Compatibility

Designed for use with standard hex fasteners in the 0.028 to 0.125 inch size range, as commonly found in HVAC equipment, electrical enclosures, plumbing valves, and pool equipment assemblies.

Installation Notes

Hex keys are a hand tool used by licensed technicians and service professionals across trades. Before servicing any equipment, power down electrical systems and close appropriate shutoffs per applicable codes. Select the correct hex key size for a snug fit in the fastener socket before applying torque to avoid rounding the drive recess. Worn or damaged hex keys should be replaced rather than forced to prevent fastener damage.