Securfix Twin Thread Screws - 7 x 1 ¼"-3.9 x 30mm | Pack of 200

You are buying 200 3.9 x 30mm twin thread screws here, size 7 x 1 1/4 inch (3.9 x 30mm), made by Securfix. They take a cross/pozi bit, and the heads are countersunk with a zinc plated finish.

Key features

• Size 7 x 1 1/4 inch (3.9 x 30mm)
• Pack of 200
• Twin thread
• Cross/pozi drive
• Countersunk head
• Zinc plated

Specifications

Which one do I need?

Thicker work needs a longer screw and thin sheet a shorter one, so compare the 30mm length with your material.

How to use

1. Set out the fixings first, spacing them so every 30mm screw has timber or board to bite into.
2. Drill a small pilot hole through the first piece to keep the 30mm screw straight.
3. Drive at a steady speed with a bit that matches the recess, keeping the 30mm screw straight.
4. Stop driving as soon as the 30mm head sits level, and check the joint is tight.

FAQs

What is in the pack of 3.9 x 30mm twin thread screws?

The pack holds 200 screws, each 30mm long.

What is the screw size?

Each screw is 30mm long.

What finish do they have?

They are zinc plated, with a cross/pozi drive on a 30mm countersunk head.