6-40 NF High Speed Steel Taper Tap

For producing precision threads by hand tapping, for starting threads - either second or bottoming taps should used after to achieve desire thread depth.
General purpose use
Suitable for materials up to 1000N/mm2
Through & blind holes
Suitable for both hand and machine operations
Threads per inch 40
Overall length 50mm
Cutting length 17mm
Drill diameter 2.9mm