We often stick to the basic principle "Quality 1st, Prestige Supreme". We are fully committed to giving our shoppers with competitively priced excellent products and solutions, prompt delivery and skilled provider for 100% Original Factory China Fastener Manufacturers Carbon Steel Stud Bolts with ISO Certificate, In addition, we would properly tutorial the purchasers about the application techniques to adopt our items plus the way to select appropriate materials. What You Have to have Is What We Pursue.We've been sure our solutions will bring you first class quality.And now sincerely hope to promote partner friendship with you from all over the world. Let's joint hands to cooperate with mutual benefits! ● Material:Middle carbon Steel 35k,45k, Alloy Steel 40Cr ● Size: M10-M36 ● Grade: 8.8, 10.9, 12.9 ● Surface treatment: Plain, Black, Zp Hot dip galvanizing, Dacromet, Teflon. ● Package: Small box, or 25kgs/carton, 36cartons/pallet ● Delivery: 30-60 days 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.