Carriage bolts are a unique design with a squared shank that remains within the hole, preventing rotation and guaranteeing a secure fastening. These bolts comprise a cylindrical head with a square or hexagonal recess, designed to be driven by a wrench or socket. DIN 603 carriage bolts adhere to the stringent standards set by the German Institute fo

This specification, EN 14399:2005, defines the specifications for high-strength structural bolted assemblies. It addresses a wide range of bolted connections used in engineering applications. The standard provides guidelines for the design, fabrication, inspection, and testing of bolted assemblies to ensure their reliability. It also specifies the

DIN 931 specifies the specifications for hex head fasteners. These nuts are commonly used in numerous industries, from automotive engineering toassembly. The DIN 931 standard covers sizes such as head size and thread form. It also defines criteria for material grade and tolerances. Complying with DIN 931 ensures robust connections and improves th