A six-sided, double chamfered nut that is available in various widths and lengths. Hex couplers are used to connect two pieces of threaded material. Hex and heavy hex couplers are threaded right hand. If a right hand-left hand coupler is needed, consider using a sleeve nut. All Nuts are available in 304, 304L, 316, 316L , H.T Gr. 8 , 10 , etc…