SCREW SIZE CHART

Gauge

Hole Size (mm)

Screw Head Diameter (mm)

BZP

Black

Countersunk

4

2.1 – 2.6

5.0

-

-

6

2.4 – 3.2

6.5

8.0

6.6

8

2.9 – 3.8

8.0

10.0

8.1

10

3.4 – 4.5

9.0

11.0

9.4

12

4.1 – 5.1

10.5

-

10.8

14

4.8 – 6.0

-

-

-

IMPERIAL SCREW SIZE TO METRIC CONVERSION CHART

4 x 1/2 = 2.9 x 13mm

8 x 1 = 4.2 x 25mm

10 x 3 = 4.8 x 75mm

4 x 3/4 = 2.9 x 19mm

8 x 1.1/2 = 4.2 x 38mm

12 x 1/2 = 5.5 x 13mm

6 x 1/2 = 3.5 x 13mm

8 x 2 = 4.2 x 51mm

12 x 3/4 = 5.5 x 19mm

6 x 3/4 = 3.5 x 19mm

8 x 2.1/2 = 4.2 x 64mm

12 x 1 = 5.5 x 25mm

6 x 1 = 3.5 x 25mm

8 x 3 = 4.2 x 75mm

12 x 1.1/2 = 5.5 x 38mm

6 x 1.1/2 = 3.5 x 38mm

10 x 1/2 = 4.8 x 13mm

12 x 2 = 5.5 x 51mm

6 x 2 = 3.5 x 51mm

10 x 3/4 = 4.8 x 19mm

12 x 2.1/2 = 5.5 x 64mm

7 x 7/16 = 3.9 x 11mm

10 x 1 = 4.8 x 25mm

12 x 3 = 5.5 x 75mm

7 x 1 = 3.9 x 25mm

10 x 1.1/2 = 4.8 x 38mm

14 x 3/4 = 6.3 x 19mm

8 x 1/2 = 4.2 x 13mm

10 x 2 = 4.8 x 51mm

14 x 2 = 6.3 x 51mm

8 x 3/4 = 4.2 x 19mm

10 x 2.1/2 = 4.8 x 64mm