Carriage bolts are a unique design with a squared shank that locks within the hole, preventing rotation and ensuring a secure fastening. These bolts include a cylindrical head with a square or hexagonal recess, formulated to be driven by a wrench or socket. DIN 603 carriage bolts meet the stringent standards set by the German Institute for Standard

In the realm of structural engineering and construction, bolt assemblies play a essential role in ensuring the integrity and safety of various structures. Understanding the intricacies of non-pre-load bolt assemblies is paramount for achieving reliable connections. Two key standards that govern these assemblies are BS EN 15048 – 1 and 28.8 & 10.9