High strength hexagon bolt with nut DIN931/933 Class: 10.9, 12.9 grade Material: ... santiway international Co., Ltd are supplying all kinds of high quality products such as bolts, high strength bolts, screws, nuts, threaded rod, anchor ... Power Station Company part equipment as follows: High strength nexagon boits,nuts and wasners of ANSI standars with iargehead,nutsand washers for steel structrue