Hex bolts with hex nuts 1,Products DetailesMaterial1.Stainless Steel: SS201, ... 1213, 12L14,12156.Aluminum: Al6061, Al6063 etc7,.Carbon steel: C1006,C1010,C1018,C1022,C1035K,C1045 8, Alloy steel: SCM435, ... free of charge if there is available tool for us.Lead time10-15 working days as usual ... month warranty.Aftersales servicewe will follow up goods for every customer and help solve problem after sales. ...