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Concrete Screws Csk Head Zyp - 7.5 x 60mm - Gold

Concrete Screws Csk Head Zyp - 7.5 x 60mm - Gold

Discover the reliability of our Concrete Screws Csk Head Zyp, designed specifically for secure fas...

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eBayConcrete Screws Csk Head Zyp 7.5 x 60mm - FJCS75060A - Box of 100
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DebenhamsUnifix Unisex Gold Concrete Screws Csk Head Zyp 7.5 X 60Mm - Box Of 100 In
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OnBuy.comConcrete Screws Csk Head Zyp 7.5 X 60Mm - Fjcs75060a - Box Of 100 5014196576558
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£9.57
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B&QB&Q - Masonry Concrete Stone Door Window Frame Screw Countersunk Zyp
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£10.18
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Product Information

Full details

The Unifix Concrete Screws Csk Head Zyp (7.5 x 60mm) are engineered for professional contractors and DIY enthusiasts who require a reliable, flush-mount fastening solution for masonry applications. These screws excel at providing high-strength anchoring in concrete, brick, and block, though they require a pilot hole to prevent substrate cracking or structural damage during installation.

All features

ColourGold
Model Part Number5014196576558
BrandUnifix

Extended Product Information

FAQs

Do I need a wall plug for these screws?

No, these are designed as 'self-tapping' concrete screws and should be driven directly into a clean, appropriately sized pilot hole in the masonry.

What size drill bit should I use?

Generally, a 6mm masonry drill bit is standard for a 7.5mm concrete screw to allow for proper thread engagement, but always check local guidance for your specific concrete hardness.

Can these be used outdoors?

Yes, the ZYP (Zinc Yellow Passivated) coating provides a good level of corrosion resistance for outdoor use, though they are not intended for marine or highly caustic environments.

Can I remove and reuse these screws?

These screws are intended for permanent installation. Removing them often damages the masonry hole, making re-insertion ineffective.

Are they compatible with an impact driver?

Yes, using an impact driver is the recommended method for driving these into masonry, provided you monitor the torque to prevent snapping.

Troubleshooting

Screw spins without tightening

The pilot hole is likely too wide or the concrete substrate has crumbled; try moving the anchor point or using a chemical anchor.

Screw head shears off during installation

Ensure the pilot hole is clear of dust and use a lower torque setting on your driver to prevent over-torquing.

Pros and Cons

Pros

  • Flush-mount countersunk head creates a clean aesthetic.
  • ZYP coating ensures long-term protection against corrosion.
  • Simplified installation process reduces time on the job site.
  • High-strength steel construction for secure anchoring.

Cons

  • Requires pre-drilling a pilot hole in masonry.
  • May be difficult to remove once fully seated.
  • Not suitable for soft or brittle materials like certain types of lightweight aerated blocks.

Setup, Compatibility & Care

To ensure maximum holding strength, always use a drill bit specifically designed for masonry that matches the recommended pilot diameter for 7.5mm screws.

  1. Mark your hole location accurately.
  2. Drill a pilot hole into the concrete to a depth slightly deeper than the screw length (at least 65mm).
  3. Thoroughly clear the hole of masonry dust using a vacuum or compressed air, as trapped dust can prevent the screw from seating correctly.
  4. Drive the screw using an impact driver set to a low-to-medium torque setting to avoid shearing the head.

For care, avoid using these screws in highly corrosive environments like coastal areas without additional sealant, as even ZYP coating has limits against salt-air spray.

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