Screw - TurboDrive - Yellow
Best current price£4.19from B&Q
Best offers
Shopping.co.uk recommended and popular offers
B&Q£4.19Visit shop B&Q - Double Self-Countersunk Yellow-Passivated Steel Screw (Dia)4.5mm (L)80mmPack Of 20
Visit shopB&Q£4.19Visit shop One Offer
1 offer from £4.19
View price history by clicking the chart icon.
B&QB&Q - Double Self-Countersunk Yellow-Passivated Steel Screw (Dia)4.5mm (L)80mmPack Of 20
Free delivery in 1–3 days
£4.19
Visit shop
Product Information
Full details
This pack of 20 yellow zinc plated double countersunk premium wood screws from TurboDrive is designed for DIY enthusiasts and professionals undertaking various woodworking projects. The key benefit is their durable steel construction and yellow zinc plating, offering corrosion resistance and a strong hold for secure fastenings. A potential consideration is their specific length and diameter, which may not be suitable for all applications without pre-drilling. These screws feature a double countersunk head for a flush finish and a premium build for reliable performance.
All features
| Colour | Yellow |
|---|---|
| Brand | TurboDrive |
Extended Product Information
FAQs
What type of wood are these screws best suited for?
These screws are suitable for a range of softwoods and hardwoods commonly used in DIY projects. For very hard woods, pre-drilling is highly recommended to prevent splitting and make driving easier.
Can these screws be used outdoors?
The yellow zinc plating offers some protection against corrosion, making them suitable for limited outdoor exposure. However, for prolonged or harsh outdoor conditions, stainless steel or coated exterior screws are recommended.
What size drill bit should I use for a pilot hole?
For an 80mm x 4.5mm screw, a pilot hole of approximately 3.0mm to 3.5mm is generally recommended for most woods. Adjust the size based on the wood's density; a slightly larger hole for harder woods.
How do I achieve a flush finish with the double countersunk head?
Ensure you have pre-drilled a pilot hole and that the area around the hole is slightly countersunk to allow the screw head to sit level with or just below the wood surface.
What is the advantage of yellow zinc plating?
Yellow zinc plating provides enhanced corrosion resistance compared to standard bright zinc plating, offering better protection against rust and degradation, especially in moderately humid environments.
Are these screws magnetic?
Most steel screws are magnetic. These screws are made of steel and are likely to be magnetic.
Troubleshooting
Screw head strips during driving
Ensure you are using the correct size screwdriver bit and that it is firmly seated in the screw head. Apply consistent downward pressure. If the head is already damaged, use a screw extractor or pliers to remove it.
Wood splitting when inserting screw
Pre-drill a pilot hole that is appropriately sized for the screw shank (excluding threads) or slightly smaller for harder woods. Ensure the pilot hole is straight.
Screw does not sit flush
Verify that the pilot hole is properly countersunk to accommodate the screw head. Ensure the screwdriver bit is centered on the screw head to drive it straight.
Screw feels loose after insertion
The wood may be too soft, or the pilot hole may have been too large. Try using a slightly larger diameter screw or filling the hole with wood glue and sawdust before re-inserting.
Pros and Cons
Pros
- Offers good corrosion resistance due to yellow zinc plating.
- Double countersunk head ensures a neat, flush finish.
- Made from durable steel for reliable fastening.
- Suitable for a variety of common DIY wood projects.
- Comes in a practical pack of 20 for convenience.
Cons
- May require pre-drilling, especially in harder woods.
- Specific size (80mm x 4.5mm) might not fit all project needs.
- Yellow zinc finish could be less aesthetically pleasing in certain high-end applications compared to stainless steel.
- Not suitable for exterior structural applications where heavier-duty fasteners are required.
- Sold in a fixed quantity of 20, which might be insufficient for large projects.
Setup, Compatibility & Care
Setup:
- Select an appropriate screwdriver bit (typically Phillips head) that matches the screw's drive.
- For denser woods or to prevent splitting, it is recommended to pre-drill a pilot hole slightly smaller than the screw's diameter (e.g., 3.5mm for the 4.5mm screw).
- Drive the screw into the wood, ensuring the double countersunk head sits flush with the surface.
Compatibility:
- These screws are designed for use in softwoods and hardwoods.
- Compatible with standard power drills and screwdrivers.
- Not recommended for use with metal or masonry.
Care:
- Store screws in a dry place to maintain the integrity of the yellow zinc plating.
- Clean any dust or debris from the screws before use.
- For extended outdoor use, consider additional protective coatings or alternative fastener types.