Wiha 29251 Pre-set Torque Screwdriver 1/4 in Drive 5 Nm

Product Description

The WIHA 29251 is a pre-set torque screwdriver designed for applications where consistent, repeatable fastening torque is required. Set to a fixed torque value of 5 Nm, this tool eliminates the guesswork associated with manual feel-based fastening. The 1/4 inch drive accepts standard bits, and the cushion grip handle provides controlled hand feel during use. At 130 mm overall length and 0.25 pounds, the tool is compact enough for work in tight panels and enclosures. Rated to a minimum of 5,000 cycles, it is built for sustained professional use. Electricians, HVAC technicians, and instrumentation professionals rely on pre-set torque screwdrivers wherever terminal and equipment manufacturer torque specifications must be met consistently.

The WIHA 29251 is suited for residential and light commercial electrical panel work, HVAC control board terminal connections, and any precision fastening task where over-torquing or under-torquing risks equipment damage or code non-compliance. The fixed pre-set torque design is particularly useful in production, service, and inspection environments where a specific fastener torque must be documented and repeated across multiple units. The cushion grip handle reduces hand fatigue during repetitive use. This tool is not tether capable, making it appropriate for ground-level bench and panel work.

Key Features

• Pre-set torque at 5 Nm for consistent, repeatable fastening without adjustment
• 1/4 inch drive accepts standard screwdriver bits
• Plus or minus 10 percent torque accuracy
• Cushion grip handle for controlled, fatigue-reducing use during repetitive tasks
• Rated for a minimum of 5,000 operating cycles
• Meets ASME B107.14M, BS EN 26789, and EN ISO 6789 standards

Compatibility

Designed as an OEM-style pre-set torque screwdriver for professional trade use wherever a 1/4 inch drive, 5 Nm fixed-torque tool is specified.

Installation Notes

Pre-set torque screwdrivers should be used by qualified electricians, HVAC technicians, or instrumentation technicians familiar with fastener torque requirements. Always de-energize and lock out equipment before fastening or loosening terminals inside electrical enclosures, following applicable NFPA 70E and NEC guidelines. Do not attempt to adjust or override the pre-set mechanism, as doing so will void calibration and may affect torque accuracy. Store the tool in its case when not in use to protect the calibrated mechanism.