Describes complete general and dimensional characteristics for flange heads, split flange clamps (FCS), one-piece flange clamps (FC) and ports applicable to four-screw, split and one-piece flange clamp type tube and hose connectors for use at pressures of 3,5 MPa (35 bar) to 35 MPa (350 bar ). It also specifies the dimensions of the seals to be used, as well as the grooves to house the seal.