Securfix Multi-Purpose Screws 5.0 x 75mm, Pack of 100

These Securfix 3 inch screws measure 5.0 x 75mm (10 x 3 inch) and come 100 to a pack. They are multi-purpose fixings with a pozi drive and countersunk head, made for joining timber, board and sheet metal on jobs inside the house or outdoors.

Key features

• Pack of 100 screws
• Size 5.0 x 75mm, also listed as 10 x 3 inch
• Fully threaded up to 70mm
• Cross/pozi drive with a countersunk head
• Zinc and yellow passivated finish
• Rated for interior and exterior use
• For MDF, chipboard, hardwood, softwood, plasterboard, PVCu and sheet metal

Specifications

Which one do I need?

At 75mm long these suit thicker work, such as fixing one length of timber through another. As a rule of thumb, add the thickness of the piece you are fixing to the depth you want in the material behind, and check the total is close to 75mm. For thin material, pick a shorter length so the tip does not break through.

How to use

1. Mark your fixing points and check for hidden pipes or cables before drilling.
2. Drill a pilot hole in hardwood or near the end of a board to reduce the risk of splitting.
3. Fit a pozi bit that matches the recess so it does not slip and damage the head.
4. Drive the screw at a steady speed until the countersunk head sits flush with the surface.

FAQs

Are these 3 inch screws suitable outdoors?

Yes. They are listed for interior and exterior use and have a zinc and yellow passivated finish.

What materials can they go into?

MDF, chipboard, hardwood, softwood, plasterboard, PVCu and sheet metal.

Is the screw threaded all the way up?

The range is fully threaded up to 70mm, so check the shank on the pack if a plain section matters for your job.