Diall Screw - Yellow
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B&Q£11.90Visit shop B&Q - Double-Countersunk Yellow-Passivated Carbon Steel Screw (Dia)4mm (L)30mmPack Of 500
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B&QB&Q - Double-Countersunk Yellow-Passivated Carbon Steel Screw (Dia)4mm (L)30mmPack Of 500
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Product Information
Full details
This pack of 500 yellow zinc plated wood screws from Diall is designed for DIY enthusiasts and professionals seeking reliable fasteners for light to medium-duty applications. The key benefit is their durable carbon steel construction and double countersunk design for a flush finish. A potential caveat is their recommendation for plasterboard, suggesting they may not be ideal for heavy-duty structural work. These screws are fully threaded, 30mm in length, and 4mm in diameter, offering a secure hold in wood and plasterboard.
All features
| Colour | Yellow |
|---|---|
| Brand | Diall |
Extended Product Information
FAQs
What material are these screws made from?
These screws are constructed from durable carbon steel with a yellow zinc plating.
What is the recommended use for these screws?
They are recommended for use on plasterboards and are suitable for a range of DIY projects involving light timber.
How do I achieve a flush finish with these screws?
The screws feature a double countersunk head, which is designed to sit flush with the surface when properly driven into a pre-drilled and countersunk hole.
Are these screws suitable for outdoor use?
Due to the yellow zinc plating offering only moderate corrosion resistance, these screws are best suited for indoor applications. They are not recommended for situations with significant exposure to moisture or weather.
What is the total length and diameter of these screws?
Each screw is 30mm in length and has a diameter of 4mm.
Do I need to pre-drill a hole before using these screws?
Yes, it is recommended to pre-drill a pilot hole before inserting the screw. This helps prevent the material from splitting and ensures easier insertion.
What type of screwdriver head do these screws use?
These screws have a Phillips head, compatible with standard Phillips head screwdrivers or drill bits.
Troubleshooting
Screw head strips during insertion
Ensure you are using the correct size screwdriver bit and applying firm, downward pressure. If the pilot hole is too small, the screw will be harder to drive; consider widening it slightly. Reduce driving speed on your drill.
Screw does not grip or feels loose
The pilot hole may be too large, or the material may be too soft. Try using a slightly larger screw or consider using a wall plug if fixing into plasterboard. Ensure the screw is fully threaded into the supporting material.
Screw head does not sit flush
The pilot hole may not be countersunk enough, or the material around the pilot hole might be too dense. Ensure the countersink bit is used correctly to create a recess for the screw head. Check that the material isn't splitting.
Screw causes material to split
Pre-drill a pilot hole that is appropriately sized for the screw diameter. For denser materials, consider a pilot hole that is closer to the screw's shank diameter rather than its core diameter. Ensure screws are not driven too close to the edge of the material.
Pros and Cons
Pros
- Cost-effective bulk pack of 500 screws.
- Durable carbon steel construction for reliable performance.
- Double countersunk head for a smooth, flush finish.
- Yellow zinc plating provides basic corrosion protection.
- Versatile 30mm length suitable for many common tasks.
Cons
- Primarily recommended for plasterboard, may be less suitable for heavy-duty timber.
- Yellow zinc plating offers only moderate corrosion resistance.
- Requires pre-drilling for optimal insertion and to prevent material splitting.
- Not designed for exterior use where significant weather exposure is expected.
Setup, Compatibility & Care
Setup:
- Select the appropriate drill bit for pre-drilling a pilot hole. The pilot hole should be slightly smaller than the screw's core diameter.
- Ensure the material you are fastening into is suitable. These screws are recommended for plasterboard and light timber.
- Drive the screw using a compatible screwdriver or drill bit, ensuring it is centered on the pilot hole.
Compatibility:
- Compatible with standard Phillips head screwdrivers or drill attachments.
- Best suited for use with plasterboard, MDF, and softwoods.
- Not recommended for hardwoods or situations requiring high load-bearing capacity.
Care:
- Store screws in a dry environment to prevent corrosion.
- Clean any dust or debris from the screws before use, especially if they have been stored for a long time.