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Author Topic: Spiral flute tap question  (Read 4995 times)

Offline MadNick

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Spiral flute tap question
« on: February 17, 2012, 03:55:06 AM »
Morning,

I managed to pick up a brand new 5/16 UNC spiral flute tap for pennies. It doesnt feel like its made of steel though, looks more like a ceramic finish to it.

My question is, would this be ok to use as a plug tap in stainless steel please?

Nick
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Offline DMIOM

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Re: Spiral flute tap question
« Reply #1 on: February 17, 2012, 04:20:16 AM »
The surface can be misleading with all sorts of coatings - however is there a coloured band on it?  if so, what make is it?

Yellow is usually general purpose and Red for high tensile; BUT then depending on maker, typical coding is Green = stainless and Blue = aluminium (however Guhring have Blue for stainless !)

Dave
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Offline MadNick

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Re: Spiral flute tap question
« Reply #2 on: February 17, 2012, 05:02:52 AM »
My mistake - it is HSS, worked like a treat :)

Nick
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Offline Fergus OMore

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Re: Spiral flute tap question
« Reply #3 on: February 17, 2012, 06:08:39 AM »
So you found your magnet? 

 :lol:

Regards from the Old Firm
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Offline MadNick

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Re: Spiral flute tap question
« Reply #4 on: February 17, 2012, 09:30:30 AM »
Quote from: Fergus OMore on February 17, 2012, 06:08:39 AM
So you found your magnet? 

No, my eyesight...

Nick
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Offline sparky961

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Re: Spiral flute tap question
« Reply #5 on: February 17, 2012, 12:21:08 PM »
I recently compared a few "colour band" charts and there seems to be very little standardization there.  WATCH OUT!

-Sparky
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Offline Paddy OFernichur

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Re: Spiral flute tap question
« Reply #6 on: February 19, 2012, 09:32:00 AM »
Just curious, but isn't there some laser-marked letters, numbers, and or logo's on the shank of the tap?
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