About Spiral Fultes on the Tap | YAMAWA MFG. Co., Ltd.

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Even though I ordered coated spiral pointed taps to tap through holes, a distributor told me, "Can I offer AU+SL spiral fluted taps"? Can I use AU+SL to tap through holes? I always thought spiral fluted taps were for blind holes.

Our AU+SL is a spiral fluted tap with a plug chamfer and is designed for through holes. A spiral fluted tap is a generic term for taps with spiral flutes. However, most spiral fluted taps are for blind hole tapping, so the general idea is that "spiral tap = blind hole use" is common. However, our AU+SL uses a Right Hand threads with a Left Hand spiral design which ejects the chips forward the same as spiral pointed taps.
For details, please refer to the explanation on the attached PDF file for details.

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