The Zhanlida Screw 340 is an anaerobic thread-locking compound that cures in the absence of air between metal surfaces, creating a permanent bond that prevents screws and bolts from loosening due to vibration, thermal cycling, or mechanical shock. With a gap fill of 0.25mm, failure torque of 20N, and disassembly torque of 25N, it provides reliable retention for threads up to M36. It is essential for any mechanical or electronic assembly where fastener security is critical — from smartphones and laptops to machinery and automotive components.