Unifix General Purpose Chippy Woodscrews - 3.5 x 20mm - Gold
The Unifix General Purpose Chippy Woodscrews are designed for a variety of woodworking application...The Unifix General Purpose Chippy Woodscrews are designed for a variety of woodworking applications. Featuring a Pozi countersunk head for enhanced drive and reduced cam-out, these screws provide excellent grip and long-lasting durability. Each screw is finished with a high-quality ZYP coating, ensuring effective corrosion resistance for various indoor and outdoor DIY projects. This pack contains 250 screws, compatible with all standard screwdrivers for easy installation.
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Product Information
Full details
The Unifix General Purpose Chippy Woodscrews are essential fasteners for DIY enthusiasts and woodworkers seeking reliable holding power in general timber projects. Featuring a Pozi countersunk head, these screws offer enhanced drive and reduced cam-out during installation, making them ideal for both novice and professional applications. While they provide excellent corrosion resistance due to the ZYP coating, they are primarily designed for standard woodworking rather than high-load structural steel or heavy-duty masonry applications.
All features
Colour
Gold
Model Part Number
Ub9Chippy/035
Brand
Unifix
Extended Product Information
FAQs
Can I use these screws outdoors?
Yes, the ZYP coating provides effective corrosion resistance for most general outdoor DIY projects.
Do I need a special drill bit for these?
These screws require a standard Pozi-drive screwdriver bit for the best results and to prevent cam-out.
Are these screws suitable for metal?
No, these are specifically designed for woodworking applications and will not perform well in metal.
Can I reuse these screws?
It is generally not recommended, as the threads may be compromised and the Pozi recess may be worn after the initial removal.
What does the ZYP finish mean?
ZYP stands for Zinc Yellow Passivated, a protective coating process that provides both a gold aesthetic and improved rust resistance.
Troubleshooting
Screw head strips during installation
Ensure you are using a genuine Pozi-drive bit rather than a standard Phillips bit and check that the torque on your drill is not set too high.
Wood splits upon entry
Pre-drill a pilot hole slightly smaller than the diameter of the screw shank before driving the screw into the material.
Pros and Cons
Pros
Resistant to corrosion via ZYP coating
Easy to drive with standard Pozi screwdrivers
Flush finish thanks to the countersunk design
Large 250-piece pack size provides great value
Reduced likelihood of cam-out during use
Cons
Not intended for heavy-duty structural steel
Limited to specific material types like wood
Requires proper pilot holes for harder timber types
Setup, Compatibility & Care
Tool Compatibility: Use these screws with any standard manual Pozi screwdriver or a cordless drill set to a low-to-medium torque setting.
Installation: Always ensure your drill bit size matches the screw head type to prevent stripping the recess.
Maintenance: While the ZYP coating is corrosion-resistant, avoid using these in highly saline coastal environments or in direct contact with chemically treated woods that may accelerate oxidation.
Storage: Keep the remaining screws in a dry environment to maintain the integrity of the protective coating.