This SAE Standard covers general and dimensional specifications for the Code 62 metric (type 1) and inch (type 2) flanged heads, flange clamps (FC and FCM), and split flange clamps (FCS and 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.
The DN 63 (-40) and DN 76 (-48) pad sizes existed for many years as special items in the field. Flange clamps were not available and the pads were used with pipe fittings. A couple of years ago, Italy proposed a clamp and supplied test data to support the design. The type 1 (metric screw) version has been approved at the ISO level. This SAE revision adds the 40 and -48 sizes and adds the inch screw sizes that have been used for years in the field. Finally, an identification groove was added to the flanged head. The groove had been approved many years ago, but never made it into the standard.