standard: DIN$ASNI material: carbon steel inish: zinc , plain , HDG specification: M6-M24&1/4-1" AOTO BOLT1.standard: DIN$ASNI2.material: carbon steel3.finish: zinc , plain , HDG4.specification: M6-M24&1/4-1"5.grade: 4.8 , 6.8 , 8.8 & grade 2 , 5 , 8 .