LOCTITE 222 is a low-strength thread locker that allows the adjustment of screws including countersunk head screws and set screws. Good on low-strength metals which could fracture during disassembly, e.g. aluminum or brass. The product works on all metals, including passive substrates such as stainless steel, aluminum and plated surfaces. t is proven to be tolerant of minor contamination due to industrial oils, e.g. engine oils, corrosion prevention oils and cutting fluids.