Thread Locker: Anaerobic adhesive with high resistance to disassembly. Ideal for permanently locking stud bolts, screws, nuts, threaded pins and studs that will not be disassembled later on. Suitable for screws up to M-20. How to use: make sure that the parts to be locked are clean, dry and free of grease. Apply a small amount of the product, just at the beginning of the thread and then proceed to lock the part.