Model Number: DIN931 Color: black Brand Name: ZYL Specifications: M10-M48 Length:20mm-300mm Material: Middle Carbon Steel 35K, 10B21, Alloy steel: 40Cr Grade:8.8 Delivery: 30-60 days Packing:  25kgs in carton,36 pallets into pallet, small boxes into big carton,then into pallet, sack bags packing 25-30kgs. Payment terms: 30% Deposit, 70% against copy B/L, D/P or L/C at sight   1.What are hex bolt? Hexagon bolt has a fastener composed of hexagonal head and threaded rod. It can be divided into full thread and half thread according to thread length, and can be divided into coarse thread and fine thread bolt according to thread. 2.What are the performance grades of hexagonal bolts produced by your factory? Grade 8.8/10.9/12.9 3.What tool is used to screw the hexagonal screw? You need to use a adjustable wrench, a ring wrench or an open-ended wrench to screw the external hexagonal bolt. 4.Which mode of transport would be better? Generally speaking, if the production volume is large, we suggest shipping, and we respect your opinions on other modes of transportation. 5.Can I visit your factory? Yes! Warmly welcome to visit our factory. It would be Great if you can inform us in advance. 1.What are hex bolt? Hexagon bolt has a fastener composed of hexagonal head and threaded rod. It can be divided into full thread and half thread according to thread length, and can be divided into coarse thread and fine thread bolt according to thread. 2.What are the performance grades of hexagonal bolts produced by your factory? Grade 8.8/10.9/12.9 3.What tool is used to screw the hexagonal screw? You need to use a adjustable wrench, a ring wrench or an open-ended wrench to screw the external hexagonal bolt. 4.Which mode of transport would be better? Generally speaking, if the production volume is large, we suggest shipping, and we respect your opinions on other modes of transportation. 5.Can I visit your factory? Yes! Warmly welcome to visit our factory. It would be Great if you can inform us in advance.