These Forgefix Pozidriv Machine Screws are designed for use with nuts or pre-tapped holes. They are Zinc plated for increased corrosion resistance. The countersunk head is suitable for pre-countersunk holes or when fastening to timber to leave a flush surface.
Ideal for use in many DIY, ironmongery, electrical and plumbing applications.
Zinc coatings prevent oxidation of the protected metal to create a longer lasting finish. It does this by forming a barrier and by acting as a sacrificial anode if this barrier is damaged. Zinc oxide is a fine white dust that (in contrast to iron oxide) does not trigger a breakdown of the substrate’s surface integrity as it is formed. The zinc oxide, if left intact, can act as a barrier to further oxidation, in a way similar to the protection afforded to aluminum and stainless steels by their oxide layers.
The Pozidriv screw is similar in appearance to the classic Phillips cross-head, but in fact is very different. The Pozidriv has four additional points of contact, and does not have the rounded corners that the Phillips screw drive has. The biggest advantage it offers is that, when used with the correct tooling in good condition, it does not cam out, allowing great torque to be applied. The Pozidriv screw can easily be distinguished by a line embossed in the screw head at 45° to the slots for the driver.
A Machine screw is generally a smaller fastener, threaded the entire length of its shank that usually has a recessed drive type (Slotted, Phillips, etc.). Countersunk heads are designed to sink flush with substrates to leave a smooth surface finish.
M5 x 40mm
We deliver throughout the UK and delivery times are 3 working days or better.
Should you need faster delivery, this can often be arranged. Please phone us with your specfic requirements.
Our returns policy allows you to return any item if it is not what you require within 14 days of receipt. This is as long as it has not been used and is returned in its original undamaged packaging.
Full details are in our Delivery and Returns page.
Christmas Deliveries & Support
Too ensure deliveries in time for Chirstmas - please order before 1pm Monday 22nd December, but whenever you order we will do our best to get it to you in time. We will be processing and delivering orders between Christmas and New Year.
Telephone Support will be closed between Tuesday 23rd December and Monday 5th January. Please send any queries via email: firstname.lastname@example.org