Zhongli Bolts Manufacturing Co., Ltd. has many years of manufacturing experience, advanced equipment, senior professional and technical personnel and advanced management system. Now it has developed into one of the largest technical force and abundant standard parts manufacturers in China, and enjoys a high reputation. The company has independent import and export rights, and has passed ISO9001 quality management system certification. We are a skilled and creative team. Our company respects and cultivates qualified talents. Human resources are the core value and the most valuable asset of our company. Talent is the driving force for the development of our company. Our aim is "good faith management, mutual benefit and win-win". The goal of "Survival by Quality" is to make the quality of products and services meet and exceed the expectations of customers. Product name: hex flange bolt Finish: Yellow zinc Material: Carbon steel Brand Name: ZYL Size: M8-M36 Length:30mm-200mm Grade: 8.8 10.9 12.9 Packing: Cartons+plastic Bags Din6921 hex flange bolt standard and dimensions: 1.what are hex bolt? Hexagon flange bolt: Hexagon head, flange and screw together form fasteners. 2.What are the grades of bolts? 4.8, 6.8, 8.8, 10.9, 12.9, etc. Grade 8.8. The above bolts are made of low-carbon alloy steel or medium-carbon steel and are heat treated (quenched and tempered). , commonly known as high-strength bolts, and the rest are commonly known as ordinary bolts. 3. What are the benefits of flange bolts? The common bolt head is very thick, so it is difficult to deform. If it vibrates after being fastened, it needs to be tightened again. The flange has a thin part, which can be slightly deformed and locked more firmly. That is, if you go up into the hole, ordinary bolts can't use tools. The head of flange bolts is small, and the flange below also plays a fastening role, but special tools can be used to go up into the hole, which is about the same as the principle of hexagonal bolts. Then there is the flat pad at the top of the flange, which is safer on the softer, non-wear resistant material and will not cause perforation. 4.Why choose us? To provide our customers with first-class service, supply high-quality fasteners and reduce costs. 5. How to ensure quality? We have strict quality control from production to delivery. The company has strong technical support and trained a group of managers who are familiar with product quality and good at modern management concepts.