Stage 8 Locking Fasteners Description Tired of constantly tightening the same bolt or nut ? Constantly removing parts such as turbo manifolds and gaskets because the nuts keep coming loose ? Unable to get that exhaust system to stay in place regardless of all your efforts and you think that the miracle solution doesn't exist ? Look no further. These fasteners made by Stage 8 in the USA have a patented system and are 100% guaranteed to avoid coming loose. Their design doesn't just block friction between the threads (how standard bolts and nuts usually work) but ensures a complete lock of the mechanism that can withstand almost anything. Once the nut is in place a retainer is placed on it (the part having a water drop shape) allowing it to be wedged against any surrounding part and mechanically locking it tight. To finish a snap ring (also called clip) is placed in the groove of the nut to guarantee complete locking. Guaranteed. Quick and easy to install the Stage 8 locking fasteners are just as easy to remove and can be used as many times as you need. Whether they are facing vibrations heating and cooling cycles expansions knocks or any other sort of challenging condition they remain locked in place. Nut and snap ring are made of stainless steel plated with a duplex Nickel finish. Retainers are polished aluminium. These materials guarantee and long term resistance against seizure. In the past 30 years millions of these fasteners have been sold and Stage 8 have never encountered any failure. They are so reliable that their patented fasteners are used on spacecrafts and nuclear submarines. Presentation Video