TDHS - BSPT Circular Dies

M2 High Speed Steel                           Precision whitworth thread Class 2                            BS1127 (1950)
Normal entry - 1.5 pitch chamfer lead                                                                                     Right hand threading
Usually supplied bright finish                                                                                                   for BS Taper Pipe threads “Rc” series

Left hand table shows dies with default diameter, usually the smallest practical diameter, and which will normally be
provided if only the threading diameter is specified. The right hand table shows other outside diameters (usually larger)
which are also often available from stock.