... connecting rod bolt 1.Mat:S.S or Carbon 2.Head mark:OEM,Dia:1/4-1" 3.Processing:Cold &Hot forged ... Stainless steel connecting rod bolt 1.Material:Stainless Steel ... 6,ISO4014,ISO4017,etc8.Production Processing:Cold forged or Hot forged9.Surface:Whited,Plain, ... assured and can provide English test report11.Machine:Forged machine, Heat treatment Equipment, Drawing machine, ...