Securfix Multi-Purpose Screws 5.0 x 100mm (10 x 4 inch), Pack of 100

Securfix 100mm wood screws in 5.0 x 100mm (10 x 4 inch), supplied as a pack of 100. With a countersunk head, pozi drive and a double corrosion resistant finish, they are a long multi-purpose screw for heavier timber joints and fixings, indoors or outside.

Key features

• Pack of 100
• 5.0 x 100mm, equal to 10 x 4 inch
• Countersunk head with pozi drive
• Zinc and yellow passivated for double corrosion resistance
• Suitable for interior and exterior use
• Works in MDF, chipboard, hardwood, softwood, plasterboard, PVCu and sheet metal

Specifications

Which one do I need?

Choose this 100mm length when a shorter screw will not reach far enough into the second piece, for example when fixing through a thick section of timber. For thinner boards, a shorter length avoids the point breaking through the far side.

How to use

1. Hold the pieces together with clamps so they do not creep while you drive.
2. Drill a pilot hole, especially in hardwood or close to the end grain.
3. Use a correctly sized pozi bit and keep the driver in line with the screw.
4. Stop when the countersunk head is flush; overdriving can strip the hole.

FAQs

How long are these 100mm wood screws in inches?

They are listed as 10 x 4 inch, which matches the 5.0 x 100mm metric size.

Can I use them outside?

Yes, they are for interior and exterior use with a zinc and yellow passivated finish.

Will they fix into PVCu or sheet metal?

The listed materials include PVCu and sheet metal, along with MDF, chipboard, hardwood, softwood and plasterboard.