Super Flangeless LiteTouch Stainless Steel Nut is strong and durable. It eliminates loosening of fittings due to tube twisting, hold tight even during vibration and delivers the highest pressure holding for flat bottom fittings that we offer. It provides excellent reliable connections that need to be broken frequently and tubing assemblies because they swage onto the tubing. This short Nut is for 1/16 or 1/32 tubing OD and has a thread port configuration of 1/4-28 Flat-Bottom.