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H1

The difference between HT, SP, and PO

【英】困ったときの知恵袋詳細
Cutting Taps Basic Knowledge
I've heard there are HT Hand Taps, SP Spiral Flute Taps, and PO Spiral Point Taps offered as cutting taps. I don't clearly understand the difference. Can you please explain what each type of tap is for and when to use them.
First, let's check the difference of the flute shapes of a HT hand tap, a SP spiral flute tap and a PO spiral point tap in the picture below. There is a big difference in the performance and flute shape. Each tap creates a different type of chip. The three styles of taps discharge the chips in a different direction.

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