Securfix Performance Screws 4.5 x 70mm, Box of 100

4.5 x 70mm performance screws from Securfix come 100 to a box, designed to start quickly and drive without a pilot hole. The thread is partially serrated and designed to resist jacking, with double corrosion resistance. The manufacturer says there is no risk of splitting or snapping, and no pre-drilling.

Key features

• Size 4.5 x 70mm, box of 100
• Self-drilling and self-countersinking
• No pilot hole needed
• Anti-friction thread prevents jacking
• Partially serrated thread
• Double corrosion resistance

Specifications

Which one do I need?

Size 4.5 x 70mm gives diameter first and length second. Compare the length with the combined thickness of your parts so the point does not break out of the back.

How to use

1. Mark the positions and check there are no pipes or cables behind.
2. Skip the pilot hole, as the manufacturer says none is needed for a self-drilling screw.
3. Use a PZ bit that fits the head and keep it square while you drive.
4. Let the self-countersinking head finish flush with the surface, then stop.

FAQs

What does the box of 4.5 x 70mm screws contain?

The box holds 100, each 4.5 x 70mm.

Do I need a pilot hole for 4.5 x 70mm performance screws?

No. The manufacturer says they are self-drilling and need no pilot hole.

What does the thread do?

The anti-friction thread prevents jacking, and it is partially serrated.