Wiha 71903 Screwdriver Insert Bit 3 Point 6.3 Mm Hex Drive

Product Description

The WIHA 71903 is a Number 3 point screwdriver insert bit designed for use with 6.3 mm hex drive power tools and bit holders. At 25 mm (1 inch) overall length, this is a standard 1-inch insert format compatible with most quarter-inch hex bit holders used in production, maintenance, and service work. The bit is sold in a pack of 10, making it a practical choice for shop stocking or field kit replenishment where high-use bits need to be replaced regularly. Electricians, HVAC techs, and general maintenance professionals who work with equipment panels, junction boxes, and terminal covers will find this size and format useful for day-to-day fastening tasks.

This insert bit is suited for residential and commercial service environments where a Number 3 Phillips-style point is required. It fits directly into standard 6.3 mm hex bit holders, quick-change chucks, and screwdriver handles that accept the 1-inch insert format. The 10-piece pack quantity supports stocking for crews or keeping spares on hand in a service van or tool crib. Typical applications include assembly, equipment installation, and panel work across electrical, HVAC, and light mechanical trades.

Key Features

• Number 3 point size for larger fasteners common in panel and equipment assembly
• 6.3 mm hex drive fits standard quarter-inch bit holders and quick-change chucks
• 25 mm (1 inch) overall length — standard insert bit format
• Pack of 10 supports shop stocking and crew replenishment
• Compact insert format compatible with both power and manual bit drivers

Compatibility

Designed for use with any tool or bit holder that accepts a 6.3 mm hex drive, 1-inch insert bit. No specific model compatibility data was provided in the product input.

Installation Notes

Insert bits should be seated fully into the bit holder or quick-change chuck before applying torque. Inspect bits for wear or deformation before each use, as a worn tip can damage fastener heads or slip under load. Power down or de-energize any equipment before driving fasteners on live panels or electrical enclosures, in accordance with applicable NFPA 70E safe work practices.