wdt_IDTapThread StandardMajor dia (mm)Pitch (mm)Drill (mm)Major dia (Inch))TPIDrill (Inch)
1M1.6 x 0.35Metric1.60.351.250.06373#55
2M2 x 0.4Metric20.41.60.078764#52
3M2.5 x 0.45Metric2.50.452.050.098456#46
4M3 x 0.5Metric30.52.50.118151#39
5M3.5 x 0.6Metric3.50.62.90.137842#32
6M4 x 0.7Metric40.73.30.157536#30
7M5 x 0.8Metric50.84.20.196932#19
8M6 x 1Metric6150.236225#8
9M8 x 1.25Metric81.256.80.31520H
10M8 x 1Metric8170.31525J
11M10 x 1.5Metric101.58.50.393717R
12M10 x 1.25Metric101.258.80.39372011/32
13M12 x 1.75Metric121.7510.20.47241513/32
14M12 x 1.25Metric121.2510.80.47242027/64
15M14 x 2Metric142120.55121315/32
16M14 x 1.5Metric141.512.50.5512171/2
17M16 x 2Metric162140.62991335/64
18M16 x 1.5Metric161.514.50.62991737/64
19M18 x 2.5Metric182.515.50.70871039/64
20M18 x 1.5Metric181.516.50.70871721/32
21M20 x 2.5Metric202.517.50.78741011/16
22M20 x 1.5Metric201.518.50.78741747/64
23M22 x 2.5Metric222.519.50.86611049/64
24M22 x 1.5Metric221.520.50.86611713/16
25M24 x 3Metric243210.9449853/64
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