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


This document, EN 14399:2005, defines the requirements for high-strength structural bolted assemblies. It deals with a comprehensive range of bolted joints used in civil applications. The standard establishes procedures for the design, manufacture, inspection, and testing of bolted assemblies to ensure their reliability. It also specifies the eleme… Read More


DIN 931 defines the requirements for hex head bolts. These fixings are widely employed in various industries, from automotive engineering toconstruction. The DIN 931 standard covers sizes such as diameter and thread type. It also sets criteria for material grade and precision. Adhering to DIN 931 ensures reliable connections and boosts the integr… Read More