Unifix Brass Woodscrews Slotted Countersunk Head - 12G X 1.1/2" (5.5 X 40mm) - Grey

Unifix Brass Woodscrews are designed for reliable fastening in wood applications. With a slotted c...

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The RangeUnifix Brass Woodscrews Slotted Countersunk Head 6G X 1.1/4" (3.5 X 30Mm) 9Tqcskbws/091 Box Of 200 - Grey
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eBayUnifix Brass Woodscrews Slotted Countersunk Head 6G X 1.1/4"" - Box of 200
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OnBuy.comUnifix Brass Woodscrews Slotted Countersunk Head 6G X 1.1/4" - Box Of 200 5014196066615
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B&QB&Q - Brass Woodscrews Slotted Countersunk Head 6G X 1.1/4" (3.5 X 30mm)9Tqcskbws/091Box Of 200
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City Plumbing GBOwletts Owlett Jaton Woodscrew Slotted Brass Countersunk Head Box Of 100 12G 76.2Mm 9Tqcskbws/221
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Product Information

Full details

The Unifix Brass Woodscrews with a slotted countersunk head are designed for DIY enthusiasts and professional woodworkers who require reliable, flush-fitting fasteners for timber projects. These 12G screws offer exceptional holding power and a clean, professional aesthetic once installed. Please note that as they feature a traditional slotted head, they require careful manual or electric driver alignment to prevent the tool from slipping during installation.

All features

ColourGrey
Model Part Number9Tqcskbws/206
BrandUnifix

Extended Product Information

FAQs

Can these screws be used outdoors?

Yes, brass is naturally resistant to corrosion, but for extremely damp or marine environments, stainless steel may be preferred.

Do I need to pre-drill holes for these screws?

Yes, pre-drilling is highly recommended to prevent splitting the timber and to ensure the screw enters straight.

What does 12G mean?

12G refers to the gauge (thickness) of the screw. A higher gauge number indicates a thicker, stronger screw.

Can I use a power drill with these?

You can, but use a low speed setting and ensure the clutch is set appropriately to prevent stripping the slotted head.

Are these screws magnetic?

No, brass is a non-ferrous metal and will not be attracted to a magnetic screwdriver bit.

Troubleshooting

Screw head strips or slot becomes deformed

Ensure the screwdriver bit size matches the slot exactly and apply firm, steady downward pressure while turning.

Wood splits during insertion

Increase the diameter of your pilot hole or ensure you are not driving too close to the end grain.

Screw is difficult to drive into hard timber

Apply a small amount of beeswax or paraffin wax to the screw threads to act as a lubricant.

Pros and Cons

Pros

  • Flush finish improves the visual quality of projects
  • High-grade brass material resists rust and degradation
  • Heavy-duty 12G gauge provides superior structural integrity
  • Suitable for both professional joinery and home DIY tasks

Cons

  • Slotted heads are more prone to driver slip compared to Phillips or Torx heads
  • Requires pre-drilling in hardwoods to prevent splitting
  • Manual installation requires more effort than modern power-driven screw types

Setup, Compatibility & Care

To achieve the best results with Unifix Brass Woodscrews, follow these guidelines for preparation and maintenance:

  1. Pilot Holes: Always drill a pilot hole slightly smaller than the shank diameter of the screw. This prevents the wood from splitting, especially near the edges of a board.
  2. Countersinking: Use a countersink bit to create a chamfered edge at the entry point so the head can seat itself below the surface.
  3. Driver Fit: Use a high-quality, flat-head screwdriver bit that fits snugly into the slot. A loose fit will damage the brass finish and make driving difficult.
  4. Maintenance: While brass is corrosion-resistant, wipe away any excessive moisture or harsh chemicals that could cause tarnishing over time.

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