This SAE J51 8 standard has been split into parts: SAE J518-1 Part 1 : Hydraulic Flanged Tube, Pipe, and Hose Connections, 4-Screw Flange Connection 3.5 to 35 MPa (Code 61 )
SAE J518-2 Part 2: standard has been split into parts: SAE J518-1 Part 1 : Hydraulic Flanged Tube, Pipe, and Hose Connections, 4-Screw Flange Connection 42 MPa (Code 62)
SAE J518-3 Part 3: Hydraulic Flange Clamps, 2-Screw Flange Connection to be used with SAE J518-1 (Code 61) Connections where Only Low Pressure is Required