Metric Standard Tap and Drill Sizes With Pitch Table

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In this table you can find the standard Metric pitches, drill hole sizes  for Tap and Threading operations. Also this sizes are commonly used for the standard screws and bolts.

 

Table Of Metric (I.S.O.) Thread Pitches, Tap & Drill Sizes
Nominal dia. mm.Pitch (F) mm.Tap drill sizes mm.
M2.0
M2.0		0.25
0.40		1.75
1.60
M2.2
M2.2		0.25
0.45		1.96
1.75
M2.5
M2.5		0.35
0.45		2.15
2.05
M3.0
M3.0		0.35
0.50		2.65
2.50
M3.5
M3.5		0.35
0.60		3.15
2.90
M4.0
M4.0		0.50
0.70		3.50
3.30
M4.5
M4.5		0.50
0.75		4.00
3.70
M5.0
M5.0		0.50
0.80		4.50
4.20
M6.0
M6.0		0.75
1.00		5.20
5.00
M7.0
M7.0		0.75
1.00		6.20
6.00
M8.0
M8.0
M8.0		0.75
1.00
1.25		7.20
7.00
6.80
M9.0
M9.0
M9.0		0.75
1.00
1.25		8.20
8.00
7.80
*M10.0
M10.0
M10.0		1.00
1.25
1.30		9.00
8.80
8.50
M11.0
M11.0		1.00
1.50		10.00
9.50
M12.0
*M12.0
M12.0
M12.0		1.00
1.25
1.50
1.75		11.00
10.80
10.50
10.20
M14.0
*M14.0
M14.0
M14.0		1.00
1.25
1.50
2.00		13.00
12.80
12.50
12.00
M16.0
**M16.0
M16.0		1.00
1.50
2.00
15.00
14.50
14.00
M18.0
*M18.0
M18.0
M18.0		1.00
1.50
2.00
2.50		17.00
16.50
16.00
15.50
M20.0
**M20.0
M20.0
M20.0		1.00
1.50
2.00
2.50		19.00
18.50
18.00
17.50
M22.0
M22.0
M22.0
M22.0
1.00
1.50
2.00
2.50		21.00
20.50
20.00
19.50
M24.0
M24.0
M24.0
M24.0		1.00
1.50
2.00
3.00		23.00
22.50
22.00
21.00
**M25.0
M25.0		1.50
2.00		23.50
23.00
M27.0
M27.0		1.50
3.00		25.50
24.00
M28.01.5026.50
M30.0
M30.0		1.50
3.50		*28.50
26.50
**M32.01.5030.50
M33.0
M33.0		2.00
3.50		31.00
29.50
M36.0
M36.0		3.00
4.00		33.00
32.00
M39.0
M39.0		3.00
4.00		36.00
35.00
**M40.0
M40.0		1.50
3.00		38.50
37.00
M42.0
M42.0		4.00
4.50		38.00
37.50
M45.0
M45.0		4.00
4.50		41.00
40.50
M48.0
M48.0		4.00
5.00		44.00
43.00
M52.0
M52.0		4.00
5.00		48.00
47.00
M56.0
M56.0		4.00
5.50		52.00
50.50
M60.0
M60.0		4.00
5.50		56.00
54.50
*SPARK PLUG PITCHES             **CONDUNT PITCHES