Hex Bolts, Carriage Bolts, Timber Bolts manufacturer / supplier in China, offering ASME/ANSI B 18.3.6m Stainless Steel Metric Hexagon Socket Flat Point Set Screws, DIN 914 Stainless Steel Cone Point Hexagon Socket Set Screws, JIS B1111 Brass Phillips Cross Recessed Countersunk Head Screws and so on.