Screw Size Chart
Chipboard Screws
Have you got the correct screw size?
Please use this measuring ruler and quick guide to help you choose the correct size screw for your needs. Generally screw lengths are taken from the part of the screw that is embedded into the substrate.
Double Countersunk Reduces the likelihood of head shear and assists completion of countersinking.
25° Sharp Point Sharp point and single lead for a fast start and improved thread acceptance.
Measure from the tip to... 150mm 140mm
• Countersinking heads are measured to the top of the screw.
• Non countersinking heads are measured to under the head.
150mm 140mm
130mm
130mm
120mm
120mm
110mm 100mm 90mm
Gauge width (mm) No.4 No.6 No.8 No.9 (3.0) (3.5) (4.0) (4.5)
No.10 No.12 (5.0) (6.0)
110mm 100mm 90mm
80mm
80mm
70mm
70mm
60mm
60mm
50mm
50mm
40mm
40mm
30mm
30mm
20mm
20mm
10mm
10mm
0mm
0mm
* these are approximate sizes only for reference purposes.