TIMco Cable Ties A2 Stainless Steel - 4.6 x 500 Stainless steel cable ties are designed for both internal and external applications, including corrosive conditions. High tensile strength with a high temperature resistance and conforming to BS 7671 standard's new 18th edition, which requires wiring systems to be supported by materials not likely to prematurely collapse in the event of a fire. High tensile strength (up to 60kg) High temperature resistance (-80°C to +500°C) All steel, non-flammable fixing conforming to BS 7671 standard's 18th edition, which requires wiring systems to be supported by materials which are unlikely to prematurely collapse in the event of a fire.