Axial lock for threaded building post nut - has notched circular plate engaging screw nut to prevent rotation

摘要

The building frame threaded rod has continuous flats on two diametrically opposed sides and a nut which cooperates with the rod and has exterior flats. A circular locking plate has a rectangular orifice pierced in its centre which can slide on the rod but is solid in rotation w.r.t. the rod. The lower face of the plate has a cut out notch which fits the nut so that the rod is immobilised in rotation w.r.t. the lock piece and the latter is immobilised w.r.t. the nut.