... 4"-4" 3. Specification: Din, IFI, JIS... DescriptionBolt and NutStandardDIN, ANSI, ASME, ASTM, IFI, JIS, ASMaterialLow carbon ... all different kinds of bolts, including foundation bolts and stainless steel hex bolts. In addition to stainless ... in various standard materials, including brass, copper, and aluminum. These bolts are offered in a wide ... freeZone,Qingdao,Shandong,China. metal bolts and nuts