This Wera 851/4 TZ SB Phillips screwdriver bit is designed for Phillips screws and features a 1/4"...This Wera 851/4 TZ SB Phillips screwdriver bit is designed for Phillips screws and features a 1/4" hexagon shank. It is extra-rigid and particularly suitable for screwing into hard materials like sheet metal or metal. The torsion shape helps prevent premature wear. It is compatible with bit holders corresponding to DIN 3126-F 6.3 and ISO 1173. This bit is ideal for use with power tools from brands such as AEG, ARO, Atlas-Copco, Biax, Black & Decker, Bosch, and Buckeye Tools. Packaged as a set of 2.
Best current price£5.84from Blueperry agriculture (UK)
This Wera PH 2 screwdriver bit is designed for professionals and DIYers who need a durable bit for driving Phillips screws, especially in challenging materials. Its key benefit is its extra-rigid construction and torsion shape, which enhance longevity and performance. A potential caveat is its specialized design, meaning it's best suited for Phillips head screws and may not be the most versatile option for all screw types.
All features
Model Part Number
05134381001
Brand
Wera
Extended Product Information
FAQs
What type of screws is this bit designed for?
This bit is specifically designed for Phillips head screws, size PH 2.
What does the 'torsion shape' do?
The torsion shape allows the bit to absorb and redirect torsional forces, reducing stress on the tip and preventing premature wear or breakage, especially when used with power tools.
Can I use this bit with any screwdriver?
Yes, as long as the screwdriver or power tool has a 1/4" hexagon shank chuck or bit holder that is compatible with standard bit shanks.
Is this bit suitable for impact drivers?
While the torsion design offers some resilience, this bit is primarily designed for screwdriving applications. For heavy-duty, repeated impact driving, dedicated impact bits may offer longer life, but this bit will perform well in many impact scenarios.
What materials is this bit best suited for?
It is particularly suitable for screwing into hard materials such as metal and sheet metal, but also performs reliably in wood and plastics.
How do I clean and maintain the bit?
Wipe the bit clean with a dry cloth after use and store it in a dry environment. Avoid harsh chemicals or solvents.
What is the length of this bit?
The length of this screwdriver bit is 50 mm.
Troubleshooting
Screwdriver cam-out (bit slips out of screw head)
Ensure you are using the correct bit size (PH 2 for PH 2 screws). Apply firm, consistent pressure directly into the screw head. Check if the screw head is damaged or if the bit tip is worn.
Bit feels loose in the bit holder
Verify that the bit holder's retaining mechanism is functioning correctly. Ensure the bit is fully inserted into the holder and is seated properly.
Premature wear on the bit tip
Confirm you are using the bit for its intended purpose (driving Phillips screws). Avoid excessive force or using the bit for prying. For repetitive high-torque applications, consider an impact-rated bit if your tool supports it, though this torsion bit is designed for durability.
Pros and Cons
Pros
Enhanced durability due to rigid construction.
Increased lifespan from the torsion design.
Reliable performance in demanding applications.
Reduces cam-out and potential damage to screws.
Specifically designed for common PH 2 screws.
Cons
Limited to Phillips head screws; not suitable for other head types.
May wear faster if used on softer materials where torsion is less beneficial.
Requires a compatible 1/4" hex bit holder.
Setup, Compatibility & Care
Setup:
Select a compatible bit holder with a 1/4" hexagon socket.
Insert the Wera Phillips screwdriver bit firmly into the bit holder.
Ensure the bit is securely seated to prevent slippage.
Attach the bit holder to your power drill, impact driver, or manual screwdriver handle.
Compatibility:
Bit Holder Standards: Compatible with bit holders conforming to DIN 3126-F 6.3 and ISO 1173.
Power Tool Brands: Suitable for use with power tools from brands such as AEG, ARO, Atlas-Copco, Biax, Black & Decker, Bosch, and Buckeye Tools, provided they accept a 1/4" hexagon shank.
Care:
Cleaning: After use, wipe the bit clean with a dry cloth to remove debris. Avoid using solvents that could degrade the material or coating.
Storage: Store the bit in a dry place, ideally in its original packaging or a designated bit organizer, to prevent rust and damage.
Inspection: Periodically inspect the tip for signs of wear or damage. Replace the bit if the tip is rounded, chipped, or shows significant deformation.