Aluminium lockout hasp ndi yosiyana ndi zitsulo zotsekera hasp muzinthu ziwiri: 1. Mutu wa loko umapangidwa ndi aluminium, yomwe imakhala yopepuka;2. Chifukwa chakuti zinthuzo ndizopanda mphamvu, ndi bwino kusankha aluminiyamu hasp pamalo ena amagetsi.