Technical specifications and application range of DIN 603 bolts
The DIN 603 standard regulates the geometric parameters, weight, and technical supply requirements for cup-head square neck bolts. The presence of a square neck is a key design feature that prevents the fastener from rotating when tightening the nut in the mounting hole.
The bolts are produced with metric threads in a diameter range from M5 to M20, accuracy class C. This type of fastener is widely in demand in industrial construction, mechanical engineering, and metal structure installation where reliable fixation of elements and an aesthetic appearance of the connection are required.
EV Group China ensures the supply of hardware products strictly in accordance with international quality standards. We guarantee the stability of material characteristics and compliance with the tolerances specified by the DIN 603 specification to ensure the durability of the assembled units.