Sherwood: 3/8"X19 BSPF HSS Hexagon Die Nut BS 1127. For use with spanners to clean and repair existing external screw threads. MPN: 5036140185005 EAN: 5036140185005 3/8"X19 BSPF HSS Hexagon Die Nut Attributes: Dimensions Standard: BS 1127 Hex Width: 1.3in Material: High Speed Steel Thickness: 5/8in Thread Direction: Right Hand Thread Size: 3/8in. x 19 Thread Standard: BSPF