Spax� Screw, Countersunk Head with T Star, Stainless Steel

Product Details

Are these screws fully threaded or part threaded?

These Spax screws are fully threaded, which helps provide consistent grip along the full length of the screw when joining materials. Fully threaded screws are a good choice when you want a strong pull through the workpiece for a secure fixing.

What do the TS15 and D3.5 mean?

The TS15 refers to the screw thread type, designed for reliable performance in its intended applications, while D3.5 indicates a 3.5 mm thread diameter. This sizing matters because matching the screw diameter to your pilot hole and the thickness of the material helps improve fit and reduces splitting risk in timber based boards.

Which materials can these screws be used with?

They are suitable for wood, chipboard, plastic, and sheet metal. This makes them a versatile option for common workshop and refurbishment jobs where you might be fixing different base materials.

Do these have a countersunk head, and will they sit flush?

Yes, these have a countersunk head designed to sit flush with the surface when paired with the appropriate countersink and pilot hole approach. This gives a neat finish and helps reduce snagging.

What drive type will I need to install them?

They use a T Star or Torx style drive, so you will need the matching Torx T Star bit or driver. Using the correct bit helps prevent cam out and supports a cleaner, more controlled screw tightening process.

What size is included in the 200 pack?

Each screw is 25 mm long with a 3.5 mm thread diameter, supplied as 200 pieces. Buying in a bulk pack is useful for larger projects or regular workshop use, helping you keep the right size on hand.

Will stainless steel help with corrosion resistance?

These screws are made from stainless steel, which offers good resistance to corrosion compared with many standard steel screws. If you are working in environments where moisture, humidity, or long term durability matters, stainless steel can be a practical choice.

Can I order by the product part number?

Yes. This product is listed as Product Part No 018.55.089, making it easier to match the exact item you need when reordering or comparing specifications.