frendeitptes
Paris
Paris
Bourges
+33 (0)1 40 04 92 30 Lun - Jeu 7h30 - 17h30 / Ven 7h30 - 16h 37, Avenue de Saint-Mandé 75012 PARIS
+33 (0)2 48 50 18 10 Lun - Jeu 8h - 17h / Ven 8h - 16h Rue du Minerai 18570 La Chapelle-Saint-Ursin
Ceritifié
ISO 9001 since 1998

Special size

ESL – HFR NUT ALL METALS
UNC/UNF - BS STANDARD

THE PRINCIPLE

ALL-METAL SELF-LOCKING HEXAGONAL DOUBLE SLOTTED NUT- BS STANDARD

The principle of self-locking nut ESL is to compress the flank of the thread of the male element on two sectors located in different planes and offset by 180 °. This principle is obtained by making two calibrated slots in the upper turret of the nut which are then crushed under a specific load to obtain a permanent deformation of the two slots (elastoplastic deformation).

During the assembly, the deformed slots in the upper turret of the ESL nut are pushed by the thread of the male element. This thrust generates pressure on the side of the flank of the thread of the male element on two sectors creating a constant locking torque (called self-locking). This self-locking torque is independent of the prevailling torque applied when tightening the ESL nut.

Product description

Definition: reusable slotted self-locking hexagon nut 
Threading: series UNC/UNF ASME B1.1 and BS 84 – BSF/BSW on request
Characteristic and performance test: steel ASME B18.16.6 and BS 4929-2
Manufacturing range: metric/inch, all diameters, coarse & fine pitch, special heights & A/F upon request