Proto J61404 Hex to Square Adapter Bit 0.25 in Drive

Product Description

The PROTO J61404 is a hex to square adapter power screwdriver bit designed to convert a standard hex shank drive tool to a square drive output. With a 0.25 inch drive size and an overall length of 4 inches, this adapter bit serves as a bridge between hex-drive power tools and square-drive sockets or bits. It is a compact, single-piece adapter suited for use in tight-access fastening applications common in HVAC, plumbing, electrical, and general mechanical service work. Weighing approximately 0.09 pounds, it adds minimal bulk to any tool setup.

This adapter bit is used wherever a hex-drive power screwdriver or impact driver needs to interface with a square drive accessory. It is well suited for residential and light commercial service calls where technicians carry hex-shank drivers but encounter square-drive fasteners or sockets. The 4 inch overall length provides enough reach for recessed fastener locations without requiring an extension.

Key Features

• Converts hex shank drive to square drive output for versatile tool compatibility
• 0.25 inch drive size fits standard quarter-inch hex chuck tools and drivers
• 4 inch overall length provides reach for recessed or obstructed fastener locations
• Lightweight at 0.09 pounds, adding minimal weight to the tool
• Single-piece construction with no moving parts to wear or fail in the field

Compatibility

Designed as an OEM-style adapter for use with quarter-inch hex shank power screwdrivers and impact drivers that require a square drive output interface.

Installation Notes

Installation requires no special tools beyond the hex-chuck driver the bit seats into. Ensure the hex shank is fully seated and locked in the tool chuck before applying torque. Disengage the power tool and confirm it is unpowered before swapping or removing the adapter bit. Follow applicable workplace safety guidelines when operating power screwdrivers and impact drivers.