Safety screw for loading and unloading prefabricated large tonnage. (Machine-translation by Google Translate, not legally binding)

摘要

Screw safety for loading and unloading prefabricated large tonnage, essentially characterized by comprising a conical body with a helical filleted and topped by a head presenting a through hole suitable for receiving sirgas or hooks to facilitate handling once halle subject to manufactured to part fades and recover is your conico merced character. (Machine-translation by Google Translate, not legally binding)