Bolt Size: Please check the product size carefully before purchasing. The overall length of the car bolt is 2.9 inch, the diameter of the studs is 9.7 mm, the pitch of the threads is 1.5 mm, the length of the threads is 1.35 inch, and the length of the studs is 2.55 inch. High Temperature Resistant Steel: Exhaust manifold bolts are made of high temperature resistant steel, which is resistant to high temperatures, strong and durable. Even under harsh conditions, it can maintain its original performance and run more stably, efficiently and safely. Vibration-Dampening Spring: This car bolt is different from similar products in the market, we also specially equipped with springs, the springs can absorb some of the vibration, reduce the impact of vibration on the fixed parts, prolong the life of the parts. In high temperature environments, the bolts with springs can compensate for this change through the compression or extension of the spring, maintaining the sealing and stability of the system. Efficient Fastening Effect: Muffler gasket bolts serve as crucial elements in maintaining system functionality, they apply sufficient pressure to the gasket, The unique thread design of the exhaust flange bolts provides strong fastening force, effectively preventing the exhaust manifold from loosening and leaking during engine operation, ensuring the sealing of the exhaust system, and improving engine performance and fuel economy. Package Including: This M10*1.5mm car bolt contains a total of springs*2, screw*2, nut*2, washer*2, this kit comes with complete accessories, when you receive car bolt, you can easily complete the installation. Suitable for most models on the market, it can be applied to a wide range of applications as long as the thread size is compatible.