4-40 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
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 48mm
Cutting length 15mm
Drill diameter 2.3mm