FasTimeSS

iTrader: (47)

i bought like a **** load of an fittings and i dont knw what thread pitch or size they are, for example this lil choad
http://www.summitracing.com/parts/SUM-220648/

homedepot ace hardware no places carry a tap for that, and that is all im tryin to do is tap a whole for that thread size

THANKS

ttranssam

iTrader: (10)

i think its npt pipe thread...

FasTimeSS

iTrader: (47)

ya but what like m12x1.5 for example

fknsmshn

iTrader: (1)

http://www.plumbingsupply.com/pipethreadsizing.html

Took 5 seconds to google. It was the first link that came up.

Really though, if you dont about pipe threads I wouldnt try tappin a hole for em yourself. Not very hard to mess up.

kmracer

iTrader: (1)

AN threads arent pipe thread, they're AN. you dont tap for an AN thread, you use a bung or a bulk head.

fknsmshn

iTrader: (1)

One end of the piece in the link he post is NPT. Thats a pipe thread.

FasTimeSS

iTrader: (47)

in what ref is the 3/8'' to like a M12x1.5 pitch?

the end i need to be drilled and tapped is the 3/8'' size not the -6 an

fknsmshn

iTrader: (1)

I dont really understand what your askin.

To tap a hole for a pipe thread, you need a pipe thread tap. You cant use anything else. For that specific part in your link, you need a 3/8" NPT tap.

FasTimeSS

iTrader: (47)

ya its a 18npt i guess but the tap i bought says this '1/4 18NPT' idk if this will work. for my 'male 3/8'''

FasTimeSS

iTrader: (47)

http://icrank.com/cgi-bin/pageman/pa...rt_npt.htm&t=2

going after this.

fknsmshn

iTrader: (1)

If you need to tap a hole for a 3/8" NPT thread, then the 1/4" NPT tap will not work.

BOA279

iTrader: (1)

http://hand-tools.hardwarestore.com/...ap-282558.aspx

and the table says why
http://en.wikipedia.org/wiki/National_pipe_thread

FasTimeSS

iTrader: (47)

exactly!

so there is no differnec between a 1/4'' 18npt and a 3/8'' 18npt?

confusing as **** if u ask me

fknsmshn

iTrader: (1)

There is a difference. Look at the "Outer Diameter" colum and you can see that 3/8" is bigger than 1/4".

FasTimeSS

iTrader: (47)

GOD DAMNIT I GOT THIS 3/8'' 18 NTP AND ITS LARGER THAN THIS 1/4'' 18 NPT. AND IT STILL WONT FIT MY 3/8NPT FEMALE END WTF RAGEEEEEEEE!!!!!!!!!!!!!!!!!!!!!

fknsmshn

iTrader: (1)

How is it not fitting? Is it way loose? When you try to thread it in does it grab a few threads then stop?

BOA279

iTrader: (1)

"Matters not the number of screaming boys, 3/8 is larger than 1/4 in every universe" lolz

FasTimeSS

iTrader: (47)

the 3/8 is large as hell and wont even screw into the female end. the 1/4 acts like it wants to fit but is way to loose