m28 X 2 2-1/2" OD HSS Round Adjustable Die Special BoltsandNuts.com They come in various shapes

They come in various shapes and sizes to fit different screw heads

Thread Length 2-1/8"

Part Number: BIT-KFD25/64

Part Number DWTSR112-1432

Part Number KFD3F1-29/64

m28 X 2 2-1/2" OD HSS Round Adjustable Die Special BoltsandNuts.com They come in various shapesProduct Description HSS Round Dies are for use in making new threads or re threading existing threads. They are good for most general purpose applications, offering a combination of hardness and toughness for wear resistance. Round dies are chamfered on both faces, one side has a 2 to 3 thread chamfer for threading and the other side has a 1 to 1 1 2 thread chamfer for threading close to a shoulder. Adjustments are made by a fine pitch screw which