Metric Thread Pitch Table

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Bolt
Diameter
(mm)		 Thread Pitch
(mm)
Standard Fine Extra or Super Fine JIS
2 .4 - - .4
2.5 .45 - - .45
3 .5 - - .5
4 .7 - - .7
5 .8 - - .8
6 1.0 - - 1.0
7 1.0 - - 1.0
8 1.25 1 - 1.25
10 1.5 1.25 1 1.25
12 1.75 1.5 1.25 1.25
14 2 1.5 - 1.5
16 2 - - 1.5
18 2.5 - - 1.5
20 2.5 - - 1.5

 

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