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Tool Talk Discussion Forum

Special Tap threads

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Dale B

07-21-2007 20:28:15




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I bought a box of tools today @ a swap meet. One of them was a tap marked 1&1/2 -18 NEF It is, as you can see, very fine. Is this the thread on brass tailstock tube like under bathroom sinks ? What does the "NEF" stand for ? Thanks Dale..... ...




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tominnebr

07-25-2007 13:51:36




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 Re: Special Tap threads in reply to Dale B, 07-21-2007 20:28:15  
Anyone know where to purchase taps in the NEF sizes?



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Dale B

07-22-2007 07:36:15




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 Re: Special Tap threads in reply to Dale B, 07-21-2007 20:28:15  
Very good ! Thanks guys !!



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XRogerX

07-21-2007 21:00:27




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 Re: Special Tap threads in reply to Dale B, 07-21-2007 20:28:15  
National Extra Fine?



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JoeK(WI)

07-21-2007 21:28:45




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 Re: Special Tap threads in reply to XRogerX, 07-21-2007 21:00:27  
Correct,Nat'l Extra Fine as shown on table."Special" would be marked"NS"



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big fred

07-23-2007 11:49:13




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 Re: Special Tap threads in reply to JoeK(WI), 07-21-2007 21:28:45  
neat chart, Joe. I see they missed at least one, the 1/4-36 UNS thread used on SMA coax connectors.



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dobber

07-22-2007 09:22:43




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 Re: Special Tap threads in reply to JoeK(WI), 07-21-2007 21:28:45  
Thanks the chart is fine and great! Just be sure to set your printers to only put out 4 pages of the chart though instead of 150 !!!



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big jt

07-21-2007 22:20:55




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 Re: Special Tap threads in reply to JoeK(WI), 07-21-2007 21:28:45  
Neat chart

Has been bookmarked and printed.

Nice link to Starret also.

jt



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