m39 X 4 3" OD HSS Round Die Quantity:1 Cryogenic KFD Drill Bits are

Cryogenic KFD Drill Bits are cryogenically frozen to -300°F for 48 hours

all stored in durable holders with self-aligning key slots that allow keys to be removed and inserted without moving others out of the way

Part Number: BIT-DWTHSHEX51624

Part Number: 87C350HCSSS/316

3/8 x 7/16

m39 X 4 3" OD HSS Round Die Quantity:1 Cryogenic KFD Drill Bits areProduct 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