Sherwood: 1/4"X28 UNF HSS Hexagon Die Nut BS 1127. For use with spanners to clean and repair existing external screw threads. MPN: 5036140184374 EAN: 5036140184374 1/4"X28 UNF HSS Hexagon Die Nut Attributes: Dimensions Standard: BS 1127 Hex Width: 0.71in Material: High Speed Steel Thickness: 1/4in Thread Direction: Right Hand Thread Size: 1/4in. x 28 Thread Standard: UNF