ISO 4032 is the definitive international standard for Metric Hexagon Regular Nuts (Style 1). It defines the dimensional characteristics, tolerances, and mechanical requirements for nuts intended for high-reliability assemblies. As part of the ISO "New System," it is designed to optimize material usage and thread engagement safety in modern mechanical engineering.

Recognized as the successor to DIN 934 for precision applications, ISO 4032 features a slightly increased nut height ($m$) to ensure that the screw or bolt fails in tension before the nut threads strip, providing a fail-safe mechanism in critical structural joints.

The technical superiority of ISO 4032 lies in its safety factor optimization. By specifying a taller profile than legacy standards, the nut ensures full thread load distribution across more engagement points. This is particularly vital for Property Class 8 and 10 fasteners where the clamping force is extreme. The "Style 1" designation identifies it as the regular thickness nut for universal industrial service.