Cap nuts feature a domed design on top that covers the end of the screw and protects it from impact, dirt and moisture. This provides an attractive and secure finish, as well as offering greater protection and extending the service life of the fastener.
Thanks to their square shape, they are easy to tighten with standard tools and ensure a firm and stable fit in every application. They are frequently used in carpentry, street furniture, metal structures and industrial installations, where mechanical strength is combined with a clean and professional appearance.
DIN 1587 cap nuts
DIN 1587 cap nuts comply with ISO 7040 and are manufactured from 04-17H, 05-22H, 6, 8 and HV 350-450 quality steel. Their robust construction ensures a secure tightening in joints subjected to loads or vibrations, while the closed top adds an extra level of protection.
Our catalogue offers several versions: zinc-plated (DIN 1587 ZP) for indoor applications, A2 and A4 stainless steel for humid or marine environments, and nickel-plated brass (DIN 1587 BR) when a decorative finish combined with mechanical strength is required. All are easily installed with standard keys and ensure durable and reliable assembly.
