what are metric bolt grades mould what are metric bolt grades mould bolt grades bolt grades chart bolt grades decoded essential chart bolt grades decoded essential chart 8 8 metric bolts metric class 8 8 bolts amp nuts rga grade 8 8 bolts and high tensile class linghunt misc hardware grade 8 8 bolts bs 3692 class 8 8 jh grade 8 8 bolt and bs 3692 class 8 8 calculate structural metric bolt lengths full thread hex metric bolt class 8 8 grade 8 8 bolts bs 3692 class 8 8 jh how is the bolt grip length calculated bolt grades decoded essential chart strength requirements by grade iso grade markings for steel fasteners strength requirements by grade bolt grades with charts engineerexcel metric to imperial grade equivalents weight count chart house of bolts