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 |
