Metric Tap & Drill Sizes
Tap Thread Metric Decimal
Drill Drill
4mm x 0.70 3.3mm 0.130"
4.5mm x 0.75 3.7mm 0.146"
5mm x 0.50 4.5mm 0.177"
5mm x 0.80 4.2mm 0.165"
6mm x 0.75 5.25mm 0.207"
6mm x 1.00 5.0mm 0.197"
7mm x 1.00 6.0mm 0.236"
8mm x 1.00 7.0mm 0.276"
8mm x 1.25 6.7mm 0.264"
10mm x 1.00 9.0mm 0.354"
10mm x 1.25 8.7mm 0.343"
10mm x 1.50 8.5mm 0.335"
12mm x 1.00 11.0mm 0.433"
12mm x 1.25 10.8mm 0.425"
12mm x 1.50 10.5mm 0.413"
12mm x 1.75 10.2mm 0.402"
14mm x 1.50 12.5mm 0.492"
14mm x 2.00 12.0mm 0.472"
16mm x 1.50 14.5mm 0.571"
16mm x 2.00 14.0mm 0.551"
This is only a guide, Consider Material & Thickness