This specification describes the dimensional requirements for metric ports to be used with stud or plug ends per WM200, ISO 6149-2, ISO 6149-3, and ISO 6149-4.



The port dimensions in this standard conform to ISO 6149-1 and SAE J2244/1 except:



Angle tolerance for use with plug which seats on the angled surface



Drill depth increased to accommodate modified bottom tap in place of bottom tap



Identification groove is not permitted



Addition of M30 size per SAE J2244/1