The clamping bores of GN 146.5 flanged connector clamps are mechanically machined and designed for construction tubings GN 990 or DIN 2391, DIN 2395 and DIN 2462 respectively.
At the screw location z, carriage bolt and cap nut reduce the bore cross-section for clamping. Type B is equipped with seals at the screw location.
For clamping without tools, the cap nut can be replaced by an adjustable hand lever GN 911.3 listed in the table as accessory.