SRF DEFORMED NUT
The principle of self-locking of the SRF flange nut is obtained by making calibrated markings on the top of the nut under a specific load deforming the last thread(s) of the nut.
During the assembly, the screw generates pressure on the deformed thread of the nut creating a constant braking torque and independent (called self-locking) of the tightening torque of the latter.
The SRF nut has a flat base providing an enlarged support surface with the support part to improve the distribution of forces and reduce the contact pressure. With an SRF nut, it is not necessary to affix a flat washer under the nut.
Definition: all metals self-locking hexagon flange nut locking by deformation of the last threads given by recessions at the top of the nut
Threading: standard to ISO 965-2
Characteristic and performance test: for steel ISO 898-2/ISO 2320-
for stainless steel ISO 3506-2/NF E 25-035-2
Manufacturing range: metric/inch, all diameters, coarse & fine pitch, special heights & A/F upon request