Wera 05059790001 PH3 Phillips Power Screwdriver Bit

Product Description

The WERA 05059790001 is a PH3 Phillips power screwdriver bit designed for use with power tools equipped with a 1/4 inch hex drive. Built to handle high-torque applications, this bit features a specialty PH3 point size that seats firmly in Phillips fastener heads to reduce cam-out during driving. With an overall length of 2.75 inches, it fits standard bit holders and quick-change chucks commonly found on impact drivers and drill drivers. This set includes 4 pieces, making it practical for job site use where bits see regular wear. Electricians, HVAC technicians, plumbers, and general trade professionals rely on this type of bit for panel work, equipment assembly, and mechanical fastening tasks.

This bit is suited for residential and light commercial trade applications where Phillips fasteners are standard. It works in power screwdrivers, cordless drill drivers, and impact-rated bit holders accepting a 1/4 inch hex shank. The PH3 size is commonly used for larger fasteners found in electrical enclosures, equipment covers, junction boxes, and structural components. The 2.75 inch length provides enough reach for recessed fastener locations without requiring an extension in most standard applications.

Key Features

• PH3 specialty point size for positive engagement in Number 3 Phillips fastener heads
• 1/4 inch hex drive shank fits standard quick-change bit holders and impact drivers
• 2.75 inch overall length suits most standard and recessed fastener locations
• 4-piece set provides redundancy for high-use trade environments
• Designed for powered driving applications including drill drivers and impact drivers

Compatibility

Designed as a direct-fit replacement or supplemental bit for any power tool or bit holder accepting a 1/4 inch hex drive shank, used with Number 3 Phillips head fasteners.

Installation Notes

Seat the 1/4 inch hex shank fully into the bit holder before operating the tool to prevent slippage. When using with an impact driver, confirm the bit holder is rated for impact use. Inspect bits for wear or deformation before each use, as a damaged tip will cause cam-out and fastener head damage. Replace worn bits promptly to maintain proper torque transfer.