Sherwood: 1"X8 UNC HSS Hexagon Die Nut BS 1127. For use with spanners to clean and repair existing external screw threads. MPN: 5036140184145 EAN: 5036140184145 1"X8 UNC HSS Hexagon Die Nut Attributes: Dimensions Standard: BS 1127 Hex Width: 2.05in Material: High Speed Steel Thickness: 15/16in Thread Direction: Right Hand Thread Size: 1in. x 8 Thread Standard: UNC