... .size:M8-M48 4.grade:8.8,10.9,12.Bolts and nuts:Mechanical Properties1, Material: 40 Cr.2, Tensile strength: Mpa ... quality products such as bolts, high strength bolts, screws, nuts, threaded rod, anchor bolt, nail, other off-standard fasteners and following to the ... ( 100 Kg /mm 2 ) All the Bolts and Nuts of King Silkwary (KSK) Company have stable and reliable properties, as well as high performance ...