... casting, they can reach required tensile strength, plain and hot-dip galv. Dogspike Features: sizesM16 and upfeatureslow carton,high tensile,stailessstandardDIN,ANSI,BSW ... kinds of fasteners , such as bolts ,nuts, washers, screws, anchors and threaded rods. If any questions ,kindly let us know. Casted ...