We have developed many kinds of spider head and fasteners for curtain wall metal structure, these products, fastener, fasteners are widely used in out-wall decoration in airport, hotel, gymnasium etc. The complete parts are composed of stainless steel bolts, washers, nuts, aluminium rings, fastener, fasteners, spider head, nut, rotational bolt, screw bolt, blind nut, screw nut, screw adaptor, screw washer, screw, nut bolt, ring, sleeve, washer, bolt, screw plug and rubber seals. The stainless steel used is SUS 304, the rod end is treated by Teflon to rotate more easily.