This SAE Standard covers general and dimensional specifications for the Code 61 metric (type 1) and inch (type 2) flanged heads, flange clamps (FC &, FCM), and split flange clamps (FCS &, FCSM) applicable to four-screw flange type tube, pipe, and hose connections. Also, included are the recommended port dimensions and port design considerations. Type 2 (inch) flange clamps and split flanges are not for new design.