Fastener 1.Material:Cast iron,carbon steel 2.Weight:0.05 to 2kgs ... 4.Certificate: ISO9001 Construction Fastener 1. Material: Gray iron & ductile iron & malleable iron according to ASTM, DIN,JIS, EN, ISO, ... fastener field includes nuts, bolts, washers, screws,pins, rivets, anchors per international standard IFI, ANSI, DIN, ISO, JIS, ... quality, competitive price and on-time delivery. Cast iron Fastener