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Drill bit size for tap

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Old

Aug 25, 2005 | 02:20 PM

#1

Mark

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1.0 BAR

Joined: Apr 2003

Posts: 295

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Drill bit size for tap

Need to know what size drill bit to use with an 8mm x 1.25 tap, on the package for the tap it says to use drill bit "H"...what the ---- does that mean lol?

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Old

Aug 25, 2005 | 02:31 PM

#2

Spenser

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Posts: 3,925

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Re: Drill bit size for tap

google that ----.

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Old

Aug 25, 2005 | 02:33 PM

#3

HMTguy

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Re: Drill bit size for tap

http://www.csgnetwork.com/drillsizeconvert.html

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Old

Aug 25, 2005 | 02:36 PM

#4

95RedEX

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Joined: Aug 2004

Posts: 948

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Re: Drill bit size for tap

I googled that ----

http://www.efunda.com/DesignStandard...ewm_coarse.cfm

Maybe "H" = 6.80?

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Old

Aug 25, 2005 | 03:25 PM

#5

solfly

1.5 BAR

Joined: May 2005

Posts: 698

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Re: Drill bit size for tap

use a 17/64 and go slow with the tap

H = .266
17/64 = .2656

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