Screwdriver bit Irwin Grot 1/4" 25 mm Phillips PH3

Irwin Grot screwdriver bit with a 1/4" hex shank and 25 mm length, featuring a Phillips PH3 tip designed for precise engagement with medium-to-large Phillips screws. The bit fits standard 1/4" bit holders used in both manual screwdrivers and power drivers, offering uniform contact surface and consistent torque transfer for assembly, construction and repair work. The compact 25 mm length allows access in moderately confined spaces while maintaining control and stability during use.

Advantages

The PH3 tip is manufactured to provide an accurate fit in corresponding Phillips recesses, reducing cam-out and wear during repeated drives. The 1/4" hex shank ensures secure retention in chucks and quick-change bit holders. Durable construction supports sustained torque and frequent use without rapid deformation of the driving profile. The 25 mm overall length balances reach with control, suitable for typical household and professional applications.

Suitable for

• Assembly of furniture and fixtures using PH3 fasteners
• Construction tasks that require medium-to-large Phillips screws
• Repair and maintenance of appliances and equipment with PH3 heads
• Use with manual drivers, cordless drills and quick-change bit holders

Key specifications

• Tip type: Phillips PH3
• Shank: 1/4" hex
• Length: 25 mm
• Compatibility: standard 1/4" bit holders and quick-change chucks
• Intended use: medium-to-large Phillips screw heads

How to use

Select the Irwin Grot 1/4" 25 mm PH3 bit and insert the hex shank into a compatible bit holder or chuck until it seats securely. Align the PH3 tip with the screw recess, apply steady axial pressure, and engage the driver at an appropriate speed and torque setting for the material and fastener size. For manual use, ensure the bit is fully seated in the driver; for powered drivers, start at low speed to establish the engagement before increasing speed. Inspect the tip before use and replace the bit if significant wear or deformation is visible.

Usage recommendations

Use the bit with correct torque settings to avoid stripping screw heads. Store bits in a protective case or rack to prevent tip damage. Replace the bit when the tip shows rounding or chipping to maintain efficient and safe fastening.