mcarterbrown.com
 

Custom Projects / Custom Questions How do I customize? What do I customize? What do I use? Share you experiences and faults here!

Reply
 
Thread Tools Search this Thread
Old 11-18-2012, 11:39 PM   #1 (permalink)
MCB Member
 
Rage 01's Avatar
 
Join Date: Oct 2008
Location: Calgary - Canada

ASA thread size?

Does anyone know what the thread size is for the asa? (where the tank screws in)

Can you use a tap? or are the threads cut with a lathe?
Got a project in mind.

Thankx.
__________________
M. Carter Brown FEEDBACK
Rage 01 is offline   Reply With Quote
Old 11-18-2012, 11:44 PM   #2 (permalink)
Post Whore
 
lexiones's Avatar
 
Join Date: Jul 2006
Location: Lewistown, pa

Fan of EMR
IIRC you can get by with a 1/2-NPS pipe tap. Though that is a little off from the standard.
lexiones is offline   Reply With Quote
Old 11-19-2012, 12:01 AM   #3 (permalink)
Doesn't work for Avratech
 
ApoC_101's Avatar
 
Join Date: Aug 2007
Location: Vancouver, BC

ASA threads are called CGA 320 (the ASTM F1750 standard), if you tap it with 1/2-14 taps you will need to use a good bottoming tap to make sure the threads are deep enough. no guarantee the thread size and quality will be what you want though... ASA internal threads are usually thread turned or milled to get the size and finish good (but, you should be able to manage with taps if you use half decent taps and the sizes are right).
ApoC_101 is offline   Reply With Quote
Old 11-19-2012, 12:16 AM   #4 (permalink)
MCB Member
 
Rage 01's Avatar
 
Join Date: Oct 2008
Location: Calgary - Canada

So this will work? Or is that not a good tap?

1 2 14 NPS HSS Pipe Tap Union Butterfield 1542 1010584 | eBay
__________________
M. Carter Brown FEEDBACK
Rage 01 is offline   Reply With Quote
Old 11-19-2012, 12:38 AM   #5 (permalink)
Post Whore
 
lexiones's Avatar
 
Join Date: Jul 2006
Location: Lewistown, pa

Fan of EMR
As apoc said you would also need a bottoming tap or else the bottom of your threads will only be started.
lexiones is offline   Reply With Quote
Old 11-19-2012, 01:53 AM   #6 (permalink)
US ARMY SIG CORPS
 
redlaser666's Avatar
 
Join Date: Dec 2010
Location: Spanaway, Washington

here is one

1 2 14 NPS 4 Flute HSS Bottom Tap 1 1 8 FL Made in Japan 1pc Used | eBay
__________________
My Feedback!
redlaser666 is offline   Reply With Quote
Old 11-19-2012, 01:40 PM   #7 (permalink)
MCB Member
 
Rage 01's Avatar
 
Join Date: Oct 2008
Location: Calgary - Canada

Quote:
Originally Posted by redlaser666 View Post
Thank you..
Bought it. I was looking around and the cheapest one I could find was $45.00 with $20 shipping. This one was worth picking up to play with.

Thankx again.
__________________
M. Carter Brown FEEDBACK
Rage 01 is offline   Reply With Quote
Old 11-19-2012, 02:14 PM   #8 (permalink)
Doesn't work for Avratech
 
ApoC_101's Avatar
 
Join Date: Aug 2007
Location: Vancouver, BC

remember to get the hole diameter right before the tap goes through... boring it is a must to make sure the hole size is straight and on size. measure the ID of another ASA and go from that
ApoC_101 is offline   Reply With Quote
Old 11-19-2012, 02:59 PM   #9 (permalink)
MCB Member
 
Spider!'s Avatar
 
Join Date: Dec 2008
Location: Houston, TX

Quote:
Originally Posted by ApoC_101 View Post
remember to get the hole diameter right before the tap goes through... boring it is a must to make sure the hole size is straight and on size. measure the ID of another ASA and go from that
That's going to be a tough tap anyway, isn't it? Those are some fat threads to bottom.

Fat bottom threads...you make the back bottle valve go 'round.

__________________
My Feedback
Spider! is online now   Reply With Quote
Old 11-19-2012, 03:10 PM   #10 (permalink)
Doesn't work for Avratech
 
ApoC_101's Avatar
 
Join Date: Aug 2007
Location: Vancouver, BC

Quote:
Originally Posted by Spider! View Post
Fat bottom threads...you make the back bottle valve go 'round.

Hah, nice

tough tap, not really no. I've snapped one inch taps before in very tough steels, that I would consider tough... half inch anything in aluminum is cake walking
ApoC_101 is offline   Reply With Quote
Reply

  mcarterbrown.com » Custom » Custom Projects / Custom Questions

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

Forum Jump


All times are GMT -4. The time now is 09:14 AM.


Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Search Engine Optimization by vBSEO
© MCB Network LLC