Self Tapping Screw Sizes

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Self Tapping Screws :- sizes and pilot holes

Self Tapping Screw Sizes

Gauge No       Metric size

          2                2.1mm

          4                2.9mm

          6                3.5mm

          7                3.9mm

          8                4.2mm

        10                4.8mm

        12                5.5mm

        14                6.5mm

Pilot Hole Approx Sizes (in inches)

Screw Size

Material Thickness (Inches)

0.020–0.029

0.030–0.039

0.040–0.059

0.060–0.099

0.100–0.130

4

0.097 (2.5mm)

0.097 (2.5mm)

0.098 (2.5mm)

6

0.119 (3mm)

0.120 (3mm)

0.121 (3mm)

0.122 (3mm)

8

0.145 (3.5mm)

0.146 (3.5mm)

0.147 (3.5mm)

0.148 (3.5mm)

10

0.164 (4mm)

0.166 (4mm)

0.168 (4mm)

0.170 (4.5mm)

0.170 (4.5mm)