Batra Screw India

DIN 1587 hexagon domed cap nuts are primarily used for covering and protecting the threaded ends of fasteners, offering a decorative finish and preventing damage or injury. They can also aid in the application's insulation depending on the material. 

DIN 6923 Hex Flange Nuts are hex nuts with internal machine screw threads and a circular flange that flares to a diameter larger than its hex top section. The bearing surface of the nut can be non-serrated (smooth) or serrated.