Sherwood: 18X1.50MM HSS Hexagon Die Nut BS 1127. For use with spanners to clean and repair existing external screw threads. MPN: 5036140183834 EAN: 5036140183834 18X1.50MM HSS Hexagon Die Nut Attributes: Dimensions Standard: BS 1127 Hex Width: 1.48in Material: High Speed Steel Thickness: 11/16in Thread Direction: Right Hand Thread Size: M18 x 1.5 Thread Standard: Metric Fine