Taraudage 1/4 NPT

HELLO;

To make a 1/4 NPT thread, what Ø to drill and how deep to drill?

THANK YOU

Thank you all;


I found the rethought in the BLACK BOOK
LE Ø drilling =11.10

Drilling Depth =10.205

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I found another info:

http://www.google.fr/url?sa=t&rct=j&q=&esrc=s&frm=1&source=web&cd=10&ved=0CFkQFjAJ&url=http%3A%2F%2Fwww.transflex.fr%2Fdownload_famille.php%3Fid%3D3.pdf%26nom%3DFILETAGES%26famille%3Dadapteur&ei=qNzFVNLpNoX6Uo33g_gN&usg=AFQjCNEJadYIef6TNTOHXtCxDg2t7hAUww&sig2=X9xQnZwzZwL56xsUiQZUYw

It's a pdf to download.

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See these links

http://www.abms.ca/Technique/Filetage_des_tuyaux.html

http://www.abms.ca/Technique/Filetage_des_boulons.html

@+ ;-))

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