Pozi, Flange, Self Tapping Screws, A Point, Zinc, BZP.
No.4, 6, 8, 10, Self Tapping Screws, Pozi, Flange Head, A Point, Zinc Plated, BS 4174
Fixaball sells all sizes and materials of self tappers, at the best internet prices, with free delivery.
Orders placed before 2pm are usually dispatched same day (Mon-Fri).
Standard, Free Delivery is Royal Mail, 2nd Class (2-5 days, most likely 2 days). For a faster delivery time, select 1st class or courier at checkout. Packs weighing under 250grams are upgraded to 1st class as much as possible,
Please choose your size and pack quantity from the drop down menus.
A self-tapping screw is a screw that can tap its own hole as it is driven into the material. For hard substrates such as metal or hard plastics, the self-tapping ability is often created by cutting a gap in the continuity of the thread on the screw, generating a flute and cutting edge similar to those on a tap. Thus, whereas a regular machine screw cannot tap its own hole in a metal substrate, a self-tapping one can (within reasonable limits of substrate hardness and depth)
Self-Tapping Screw Head types
Pozidrive (pozi), Countersink (csk) Heads – Sits flush with the material surface
Pozidrive (pozi), Pan Heads – Sits proud of the material
Pozidrive (pozi), Flange Heads – Sits proud of material, spreading the load
Self-Tapping Screw Materials
We stock Zinc plated self-tapping screws for general, internal use and A2 stainless steel for improved corrosion resistance (external use).
Important Dimensions (sizes)
No.6 = screw dia. 3.5mm, head dia. 8m, head height 2.1mm.
No.8 = screw dia. 4.2mm, head dia. 9.8mm, head height 2.3mm.
No.10 = screw dia. 4.8mm, head dia. 11.2mm, head height 3mm.
No.12 = screw dia. 5.5mm, head dia. 12.8mm, head height 3mm.
All screw lengths are measured from the underside of the head.
Image is for illustrative purposes only.