wdt_ID Tap Thread Standard Major dia (mm) Pitch (mm) Drill (mm) Major dia (Inch)) TPI Drill (Inch)
1 M1.6 x 0.35 Metric 1.6 0.35 1.25 0.063 73 #55
2 M2 x 0.4 Metric 2 0.4 1.6 0.0787 64 #52
3 M2.5 x 0.45 Metric 2.5 0.45 2.05 0.0984 56 #46
4 M3 x 0.5 Metric 3 0.5 2.5 0.1181 51 #39
5 M3.5 x 0.6 Metric 3.5 0.6 2.9 0.1378 42 #32
6 M4 x 0.7 Metric 4 0.7 3.3 0.1575 36 #30
7 M5 x 0.8 Metric 5 0.8 4.2 0.1969 32 #19
8 M6 x 1 Metric 6 1 5 0.2362 25 #8
9 M8 x 1.25 Metric 8 1.25 6.8 0.315 20 H
10 M8 x 1 Metric 8 1 7 0.315 25 J
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