This SAE J518-3 standard outlines general and dimensional specifications for Code 61 2-bolt flange clamps for use in low pressure applications with J518-1 connections. For port dimensions, port design considerations, and flange head dimensions, please refer to SAE J518-1.
The rated working pressure of an assembly shall not exceed the least of all the component working pressure rated values.
Dimensions, torques, and pressures for code 61 assemblies as follow