Wiha 72503 Hex Insert Bit 1/4 in Drive 5/64 in Hex 30 Pc

Product Description

The WIHA 72503 is a 5/64 inch hex screwdriver insert bit designed for use with 1/4 inch drive bit holders, power tools, and quick-change adaptors. With an overall length of 25mm, this bit is sized for standard insert-bit applications in tight spaces and production environments. The 72503 is sold as a 30-piece set, making it a practical choice for technicians and tradespeople who go through hex bits regularly. Compatible with any 1/4 inch hex drive system, it suits electrical, mechanical, and general assembly work where consistent torque application and bit availability matter.

This insert bit is suited for residential and light commercial service work, panel assembly, equipment installation, and maintenance tasks requiring a 5/64 inch hex drive. The 30-piece quantity is appropriate for tool crib stocking, service van replenishment, or shop use where bit loss and wear are routine concerns. Electricians, HVAC technicians, and general maintenance professionals commonly use insert bits of this type when working with machine screws and set screws found in electrical enclosures, motor assemblies, and mechanical components.

Key Features

• 5/64 inch hex tip fits standard hex socket head and set screw fasteners
• 1/4 inch drive shank compatible with quick-change holders and power tool chucks
• 25mm overall length sized for insert-bit applications and compact bit holders
• 30-piece set supports high-volume use, stock replenishment, and crew supply
• No ball end — straight shank engagement for direct fastener contact

Compatibility

Designed for use with standard 1/4 inch hex drive bit holders, quick-change adaptors, and power tool chucks accepting insert-style bits.

Installation Notes

Insert bits should be seated fully into the bit holder before applying torque to prevent cam-out or bit damage. Ensure the drive tool is set to an appropriate torque setting when using with a power driver to avoid fastener or bit stripping. Inspect bits for wear or deformation before each use and replace as needed — worn bits are a leading cause of fastener damage in production and service environments.