The Firing Line Forums

Go Back   The Firing Line Forums > The Skunkworks > The Smithy

Reply
 
Thread Tools
Old January 24, 2012, 11:42 AM   #1
bop
Member
 
Join Date: September 16, 2009
Location: arizona
Posts: 34
Iver Johnson Help!

OK, I've got a good one for the gunsmiths out there. I have a .38 S%W Iver Johnson Break-Top that is in need of a firing pin "bushing". Have new (?) bushing but it looks like the threads in the reciever are a bit burred. My question: Whats the thread count & pitch on these little devils? It looks like the thread count is 44 but I'm having a hard time verifying that. All help is greatly appreciated!!
bop is offline  
Old January 24, 2012, 07:39 PM   #2
Fleet
Senior Member
 
Join Date: December 1, 2011
Posts: 108
Get a thread pitch gauge, then there's no guessing.
http://www.brownells.com/.aspx/pid=7...AD-PITCH-GAUGE
Fleet is offline  
Old January 24, 2012, 07:39 PM   #3
smoakingun
Senior Member
 
Join Date: April 12, 2009
Location: melrose, fl
Posts: 634
the best/easiest way to determine the pitch is with a pitch guage.
__________________
Hundreds of years from now, it will not matter what my bank account was, the sort of house I lived in, or the kind of car I drove... But the world may be different because I did something so bafflingly crazy that my ruins become a tourist attraction.
smoakingun is offline  
Old January 25, 2012, 10:30 PM   #4
bop
Member
 
Join Date: September 16, 2009
Location: arizona
Posts: 34
Iver Johnson

Thanks guys. I have both Standard & Metric thread gauges but I couldn't verify the count. I'll try a 9/32-44 tap & see what arises. Thanks again.
bop is offline  
Old January 26, 2012, 10:45 PM   #5
smoakingun
Senior Member
 
Join Date: April 12, 2009
Location: melrose, fl
Posts: 634
be careful with that tap. In the world of firearms, they use some non standard threads. check with someplace like brownells to see if they carry an industry specific pitch guage
__________________
Hundreds of years from now, it will not matter what my bank account was, the sort of house I lived in, or the kind of car I drove... But the world may be different because I did something so bafflingly crazy that my ruins become a tourist attraction.
smoakingun is offline  
Reply

Thread Tools

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

Forum Jump


All times are GMT -5. The time now is 08:02 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2014, vBulletin Solutions, Inc.
This site and contents, including all posts, Copyright © 1998-2014 S.W.A.T. Magazine
Copyright Complaints: Please direct DMCA Takedown Notices to the registered agent: thefiringline.com
Contact Us
Page generated in 0.06404 seconds with 9 queries