Wiha 29241 Pre-set Torque Screwdriver 4 Nm 1/4 in Drive

Product Description

The WIHA 29241 is a pre-set torque screwdriver designed for controlled fastening applications where repeatable torque accuracy is critical. Factory set to 4 Nm (566.4 inch-ounces), this tool eliminates the need for field adjustment and delivers consistent results within plus or minus 10 percent accuracy. The 1/4 inch drive accepts standard screwdriver bits, making it compatible with a wide range of fastener types. The cushion grip handle provides secure control during extended use. At 130 mm (approximately 5.1 inches) in overall length and 0.38 pounds, it is compact and lightweight for bench or field work. Licensed electricians, instrumentation technicians, and assembly professionals are the primary users of this tool.

The WIHA 29241 is suited for residential and light commercial electrical work, instrumentation panel assembly, and precision mechanical assembly where over-torquing or under-torquing a fastener carries real consequences. Applications include terminal block fastening, electronics enclosure assembly, and any task governed by torque specifications defined by equipment manufacturers or installation standards. The pre-set design is especially useful in production or service environments where multiple technicians must achieve the same result without relying on individual feel or judgment.

Key Features

• Pre-set at 4 Nm (566.4 inch-ounces) — no field adjustment required
• Plus or minus 10 percent torque accuracy for repeatable results
• 1/4 inch drive accepts standard screwdriver bits
• Cushion grip handle for control and reduced hand fatigue
• Rated for a minimum of 5,000 cycles before recalibration is required
• Meets ASME B107.14M, BS EN 26789, and EN ISO 6789 standards

Compatibility

Designed for use with standard 1/4 inch drive screwdriver bits. Suitable for fastening applications requiring a fixed torque of 4 Nm in electrical, instrumentation, and light mechanical assembly settings.

Installation Notes

This tool is intended for use by qualified technicians familiar with torque-controlled fastening procedures. Before use, verify the target fastener specification matches the pre-set torque value of this screwdriver. Do not attempt to re-adjust or modify the pre-set mechanism, as doing so will void calibration and may cause the tool to fall out of compliance with the listed standards. Recalibration should be performed by a qualified metrology lab after the rated cycle count is reached.