Sherwood: 3/4"X12 BSF HSS Hexagon Die Nut BS 1127. For use with spanners to clean and repair existing external screw threads. MPN: 5036140282285 EAN: 5036140282285 3/4"X12 BSF 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: 3/4in. x 12 Thread Standard: BSF