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Basics of thread

 

MORE INFORMATION?

Do you need more information about thread types or are you looking for a special adapter solution? Please contact our Sales Engineers.

TEESING SALES ENGINEERS
NL: +31 70 413 07 50
CN: +86-(0)10-60576210
USA: +(1) 973 383 0691
TW: +886-(0)3-5600560

ISO metric thread is a globally standardized thread. Compared to standard threads (coarse threads), fine thread has a smaller pitch.

If you have any questions please contact us or check out our fittings with M thread. 

Coarse thread
Pitch can be displayed or omitted after thread size
Fine thread
Pitch must be displayed after thread size
Thread size (mm) Major
diameter (mm)
Minor 
diameter (mm)
Pitch (mm) Thread size (mm) Major
diameter (mm)
Minor 
diameter (mm)
Pitch (mm)
M 3 2,98 2,459 0,5 M 3 x 0,35 2,981 2,621 0,35
M 4 3,978 3,242 0,7 M 4 x 0,5 3,978 3,242 0,5
M 5 4,976 4,134 0,8 M 5 x 0,5 4,98 4,459 0,5
M 6 5,974 4,917 1 M 6 x 0,75 5,978 5,188 0,75
M 8  7,974 6,917 1 M 8 x 0,75 7,978 7,188 0,75


M 10 


9,968


8,376


1,5
M 10 x 0,75 9,978 9,188 0,75
M 10 x 1 9,974 8,917 1
M 10 x 1,25 9,972 8,647 1,25


M 12


11,97


10,106


1,75
M 12 x 1 11,97 10,917 1
M 12 x 1,25 11,97 10,647 1,25
M 12 x 1,5 11, 97 10,376 1,5

M 16

15,96

13,835

2
M 16 x 1  15,97 14,917 1
M 16 x 1,5 15,97 14,376 1,5


M 20
 

19,96


17,294


2,5
M 20 x 1 19,97 18,917 1
M 20 x 1,5 19,97 18,376 1,5
M 20 x 2 19,96 17,835 2

M24

23,95

20,752

3
M 24 x 1,0 23,97 22,917 1,0
M 24 x 1,5 23,97 22,376 1,5

Flank angle is 60 °.
Female and male thread are both parallel.
Flank angle