For machining nuts or other parts of the ordinary internal thread (ie tapping). Machine taps usually refers to high-speed steel molar taps, suitable for use inMachine toolHand tapping; finger tappingCarbon tool steelOr alloy tool steel rolling tooth (or incisor) tap, suitable for manual tapping
Usage method(1) when tapping, insert the nose to tap the center line and the center line of drilling.
(2) rotate the two hands evenly and add a little pressure to the tap to feed. No pressure is needed after the feed. (3) each turn tap is rotated about 45 degrees at once to cut the chip so as not to block.
(4) if the tap is difficult to rotate, the rotation force can not be increased, otherwise the tap will break.
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