The GN 784.1 flanges are mounted from below onto the GN 784
mounting clamps with swivel ball joint. A half-length tapered groove pin prevents any rotation.
The flange enables the swivel ball joints to be mounted on the upper surface. The d2 section with the three d3 drill holes is configured so that standard screws with washers can be used.
The half-length tapered groove pin is mounted on the flange. The countersunk screw is included separately.