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Metric thread o ring port fitting size chart

Date:Apr 02, 2020

ISO 6149 Metric Port and Stud Ends

ISO 261 threads & O-ring seal

The male half has an O-ring and a straight thread, while the female half has a machined surface, a chamfer, and a straight thread. The O-ring on the male half compresses on the chamfer of the female port, to make the seal. (The ISO 6149 is the same as the SAE J1926-1O-ring Boss, except the ISO 6149 has metric threads.) The straight threads mesh to form a strong mechanical bond.

 

Metric Thread Size

Male Thread O.D. (mm)

Female Thread I.D (mm)

M8 x 1.0

8

7

M10 x 1.0

10

9

M12 x 1.5

12

10.5

M14 x 1.5

14

12.5

M16 x 1.5

16

14.5

M18 x 1.5

18

16.5

M22 x 1.5

22

20.5

M27 x 2.0

27

25

M33 x 2.0

33

31

M42 x 2.0

42

40

M48 x 2.0

48

46

M60 x 2.0

60

58


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