Sherwood: 12X1.00MM HSS Hexagon Die Nut BS 1127. For use with spanners to clean and repair existing external screw threads. MPN: 5036140183773 EAN: 5036140183773 12X1.00MM HSS Hexagon Die Nut Attributes: Dimensions Standard: BS 1127 Hex Width: 1.1in Material: High Speed Steel Thickness: 1/2in Thread Direction: Right Hand Thread Size: M12 x 1.0 Thread Standard: Metric Fine