'Acorn Nut, A2 Stainless Steel (Comparable to 18-8 Stainless Steel), Plain Finish, Grade Not Rated, Thread Size M14X2mm, Thread Type Metric, Right Hand Thread Direction, Thread Depth 17.65-18.35mm, Width 22mm, Height 25mm, Brinnel Hardness 170, General Purpose, Meets/Exceeds DIN 1587'