The drawing is indicative and the proportions may not correspond to the table or real dimensions.
Serrated hexagonal metal locknuts (metric thread)
Material: nickel-plated brass.
Features: the indentation at the base of the lock nut allows both to obtain a better seal and to scratch the color (or paint) present on the surface of the structure in such a way as to make contact and allow earthing.
Features: the indentation at the base of the lock nut allows both to obtain a better seal and to scratch the color (or paint) present on the surface of the structure in such a way as to make contact and allow earthing.