hex head half thread bolts: 1Materials:Carbon steel 2Size:M27*90,100,110,120 3Finish:Black 4Certificate:ISO9001:2008,SGS ... thread bolts Details of the product:1Materials: Carbon steel 2Size: M27*90,100,110,120 3Standard: AS, ASTM, DIN, JIS, GB ... on.Pictures:1.certificate:2. Various honorary certificates:3.product: M27*90,100,110,120 Black hex head bolts4. Factory view ...