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Power Tools Direct£7.91Visit shop Sealey Sdhx4813 Self-Drilling Screw 4.8 X 13Mm Hex Head Zinc Pack Of 100
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B&Q£30.76Visit shop B&Q - Self Drilling Screw 4.8 X 13mm Hex Head Zinc Din 7504K Pack Of 100
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The Sealey Self-Drilling Hex Head Screws (SDHX4813) are ideal for professional contractors and DIY enthusiasts who require efficient metal-to-metal or metal-to-timber fastening without the need for pre-drilling. These high-quality, zinc-plated fasteners offer excellent corrosion resistance and reliable holding power, though users should ensure they are using the correct driver bit size to avoid cam-out during installation.
| Colour | Silver |
|---|---|
| Model Part Number | SDHX4813 |
| Brand | Sealey |
No, these are self-drilling screws designed to create their own holes in suitable metal thicknesses.
These require a hex head socket driver compatible with the specific hex diameter of the fastener.
Yes, the zinc-plated finish provides good corrosion resistance, though they should be protected if used in extreme marine or highly acidic environments.
They are manufactured in compliance with DIN 7504K standards.
The pack contains 100 individual screws.
Ensure the drill speed is adequate and the tool is held perfectly square to the surface to prevent the tip from walking.
Reduce the torque setting on your driver or decrease the RPM to prevent excessive heat buildup at the drill point.
Inspect for mechanical damage to the zinc plating caused by improper socket fitment; if damaged, touch up with a cold-galvanizing spray.
For successful installation, ensure you are using a magnetic hex socket driver that matches the screw head size exactly. Avoid using worn-out sockets, as they can damage the plating on the screw head, potentially exposing it to premature oxidation. When driving, maintain steady pressure perpendicular to the surface. For storage, keep the provided resealable bag in a dry, cool location to maintain the integrity of the zinc coating. If the screws are being used in highly corrosive environments like coastal regions, consider applying an additional protective sealant over the fastener head post-installation.
