zinc chromate, yello zinc dichromate, hot dipped, bare metal, colour coating. Replace for hex bolt for industrial purpose & as per customers requirment. Quality grade 2, grade astm b-7, s/s304, s/s316, cold rolled, hot rolled. Special service packaging can be made according to customers drawings and/or samples. Inner packing: 5 pcs/box g. W. : 25 - 30kg outer packing: standard neutral carton box; we can also provide carton boxes fastened with pallet according to customers requirements.