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Spiral Point Tap
The degree is better and can withstand greater cutting force. The effect of processing non-ferrous metals, stainless steel, and ferrous metals is very good, and the apex taps should be preferentially used for through-hole threads. Spiral point tap, also known as "gun taps" because they "shoot" chips forward (clever, huh?), are very effective at clearing chips ahead of the cutting edge of the tap and pushing them out the other end of the hole.  This is especially effective for deep hole tapping.  The hole being tapped should be a thru hole, or have plenty of clearance to allow for chip collection.   Spiral point taps are also very popular because of their versatility.  They work well in many types of materials due to the shearing action of the spiral grind, and the fact that chips exiting through the bottom of the hole virtually eliminates the issue of backing out over broken chips on reversal. So, next time you set up that tapping application, selecting the correct spiral will help assure that your job won't "spiral" out of control! When the Spiral Point tap is processing the thread, the chips are directly discharged downwards. Its core size is designed to be relatively large and strong. The degree is better and can withstand greater cutting force. The effect of processing non-ferrous metals, stainless steel, and ferrous metals is very good, and the apex taps should be preferentially used for through-hole threads.
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