IHF's product portfolio includes a variety of fasteners that are used in different industries. These include standard fasteners, the two round nuts RMS and RMZ for general machinery as well as IHF Fasteners.
IHF Fasteners are specially designed for tension loaded bolted joints in steel construction and for the tightening method of hydraulic friction- and torsion-free tightening (ITH Stretch Method). Both components together form the IHF Bolting System. A long-term study based on ultrasonic measurements proves that the assembly prestressing forces applied in this process are at a high prestressing force level and lie within a narrow tolerance band. For this reason, the IHF Bolting System is defined as "maintenance-free".
Conventional high-strength preloadable sets for bolted joints in metal construction (hexagon bolt, hexagon nut and two washers) can be replaced by innovative IHF sets. These consist of only two main components: IHF Stretch Bolt / IHF Stud Bolt and IHF Round Nut - washers are not required:
IHF Fasteners can be used in general steel construction, but especially on ring flanges. Available dimensions in standard: M20 to M100.