Partially Threaded Hexagon Head Bolt and Nut Set made from durable steel with a hot dip galvanised finish. These class 5.6/5.2 bolts are engineered for application in pressure vessels, steam appliances, and flange connections across a temperature range from –10°C to +300°C and adheres to stringent industry standards such as AD2000-W7, TRD106, and DIN 267-13. Specifically tailored to meet the requirements of pressure vessel applications, these fasteners are authorised for use in various critical environments. Manufacturers complying with VdTÜV-Merkblatt 1253/4 regulations can replace a certificate EN 10204 3.1 with clear markings indicating the property class and manufacturer's mark—a recognition acknowledged by Lloyd's Register Energy, ensuring top-notch quality and compliance. Compliant to ISO 4014 and ISO 4032 standards.