The hexagon nuts conforming to ISO 4032 are manufactured from C35 steel, a material known for its strength and durability. These nuts are designed specifically for use in pressure vessels, steam appliances, and flange connections, operating effectively within a temperature range of -10 °C to +300 °C. The plain surface treatment provides basic indoor corrosion protection, making them suitable for applications where exposure to moisture is limited. These nuts feature a right-hand thread and are compatible with standard metric threads, ensuring ease of integration with various fasteners, including bolts and screws. They meet stringent industry standards, including AD2000-W7, TRD106, and DIN 267-13, which govern the safety and performance of components used in pressure-related applications. Additionally, manufacturers listed in VdTÜV-Merkblatt 1253/4 are permitted to replace the EN 10204 3.1 certificate by marking the nuts with the appropriate property class and manufacturer's mark, a practice recognised by Lloyd's Register Energy. Engineers and maintenance professionals will appreciate the reliability and compliance of these hexagon nuts for critical applications, ensuring secure fastening in demanding environments. Their robust construction and adherence to established standards make them an essential component in various industrial sectors, including petrochemical, construction, and manufacturing.