12.9 Grade Left-Hand Hex Socket Head Cap Screw, Reverse Thread Bolt, Cylindrical Head, Sizes M4-M16

This high-strength, left-hand threaded hex socket head cap screw is designed for applications requiring reverse threading. With a cylindrical head and a hexagonal socket for enhanced torque, it is ideal for preventing loosening in high-vibration environments. Made with a 12.9 grade material, it ensures superior performance and durability. Available in sizes ranging from M4 to M16, it provides flexibility for various mechanical and industrial uses. Performance level: 12.9 Material: Carbon Steel Standard No.: GB/T Manufacture country: China Instructions included: No