Securfix Twin Thread Screws 8 x 3 inch Pack of 100

8 x 3 inch twin thread screws, made by Securfix, are supplied 100 to a pack. Each screw has a countersunk head, a cross/pozi drive and a zinc plated finish.

Key features

• Size 8 x 3 inch (4.0 x 75mm)
• Pack of 100
• Twin thread
• Pozi drive
• Countersunk head
• Zinc plated

Specifications

Which one do I need?

Length is the second figure in the size, so for 75mm add the thickness of the top piece to the bite you want in the base and compare.

How to use

1. Work out the thickness of the parts you are joining and compare it with the 75mm length.
2. In hard timber, drill a pilot hole so the 75mm screw can start without splitting the work.
3. Fit a cross or pozi bit that fills the recess, then drive the 75mm screw in square.
4. Finish each 75mm screw flush with the surface and stop as soon as it is tight.

FAQs

How many 8 x 3 inch (4.0 x 75mm) screws come in the pack?

The pack holds 100 screws, each 75mm long.

What size are they?

They are 75mm long, listed as 8 x 3 inch twin thread screws.

What drive do they take?

The manufacturer gives a cross/pozi drive, so use a cross or pozi bit that fits the 75mm screw.