Diall Pozidriv Stainless Steel Screw - Silver

This pack of 200 double countersunk wood screws are constructed from durable stainless steel. They...

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B&QB&Q - Pozidriv Double-Countersunk A2 Stainless Steel Wood Screw (Dia)4.5mm (L)45mmPack Of 200
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Product Information

Full details

This pack of 200 Diall Pozidriv Stainless Steel Screws is designed for DIY enthusiasts and professionals seeking durable fasteners for wood projects. The key benefit is their corrosion resistance thanks to stainless steel construction, ensuring longevity. A potential caveat is that the Pozidriv head might require a specific driver type, limiting compatibility with standard Phillips screwdrivers. These 45mm x 4.5mm screws offer reliable performance for various woodworking applications.

All features

ColourSilver
BrandDiall

Extended Product Information

FAQs

What type of screwdriver do I need for these screws?

You will need a Pozidriv screwdriver bit, typically a PZ2 size, which is designed to fit the specific cross-shape of the screw head and prevent slipping.

Are these screws suitable for outdoor use?

Yes, they are made from stainless steel, which provides excellent resistance to rust and corrosion, making them ideal for outdoor applications.

What does 'double countersunk' mean?

It means the screw head is shaped to sink flush with or below the surface of the material, providing a smooth, clean finish without protrusions.

Can I use these screws in treated lumber?

Yes, stainless steel is generally compatible with most types of treated lumber. However, always check the manufacturer's recommendations for the specific lumber treatment.

What is the difference between Pozidriv and Phillips screws?

Pozidriv has an extra set of slots that provide better grip and reduce the likelihood of the driver bit slipping (cam-out) compared to Phillips screws, especially under high torque.

How many screws are in this pack?

This pack contains 200 screws.

What is the material of these screws?

These screws are constructed from stainless steel.

Troubleshooting

Screw head strips or cam-out occurs

Ensure you are using a Pozidriv screwdriver bit (PZ2) and not a Phillips bit. Apply firm, consistent pressure directly into the screw head and ensure the drill/driver is set to the correct torque setting.

Screw does not drive straight

Pre-drill a pilot hole, especially in harder woods or near the edge of the material. Ensure the pilot hole is aligned correctly with the desired screw path.

Screw head does not sit flush

For softer woods, ensure consistent pressure is applied. For harder woods, or to guarantee a flush finish, use a countersink bit to widen the top of the pilot hole before inserting the screw.

Screw fails to grip/tighten

The pilot hole may be too large. For softer woods, try a slightly smaller pilot hole or ensure the existing hole is clear of debris. For very soft materials, consider a screw with a finer thread or a different type of fastener.

Pros and Cons

Pros

  • Corrosion resistant due to stainless steel material
  • Durable construction for long-lasting use
  • Double countersunk head provides a neat finish
  • Pozidriv head reduces the risk of cam-out
  • Suitable for a variety of DIY and woodworking projects
  • Comes in a convenient pack of 200

Cons

  • Requires a Pozidriv screwdriver for optimal performance
  • Not suitable for materials other than wood without pre-drilling
  • Specific head type may not be universally compatible with all existing tools
  • Length and diameter may not suit extremely heavy-duty applications

Setup, Compatibility & Care

Setup: To use these screws, ensure you have a Pozidriv screwdriver or drill bit that matches the `PZ2` size, which is standard for this screw diameter. Pre-drilling pilot holes in harder woods is recommended to prevent splitting and facilitate easier driving. The double countersunk head design means the screw will self-countersink into softer woods to a degree, but for a perfectly flush finish, a countersink bit can be used on the pilot hole.

Compatibility: These screws are designed specifically for use with wood. They are compatible with most standard power drills and screwdrivers equipped with a Pozidriv bit. They are not intended for use in metal or masonry.

Care: Due to their stainless steel nature, these screws require minimal care. However, to maintain their appearance and optimal performance over time, especially in harsh environments, occasional inspection for debris is advisable. Clean with a dry or slightly damp cloth if necessary.

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