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New Vaquero Grip Frame Screw thread pitch size?

This is a discussion on New Vaquero Grip Frame Screw thread pitch size? within the Gunsmithing forums, part of the Firearm Forum category; Can someone, Iowegan... give me the thread pitch and size diameter for the Grip Frame screws on my New Vaquero? I believe the same thread ...


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Old September 10th, 2019, 08:31 AM   #1
 
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New Vaquero Grip Frame Screw thread pitch size?

Can someone, Iowegan... give me the thread pitch and size diameter for the Grip Frame screws on my New Vaquero? I believe the same thread pitch and size are the same for all new SA's. I can't find any reference on specifications.

Why? The last time I pulled my New Vaquero apart I found one of the upper grip frame screws to appear as though it got cross threaded. I replaced it with a new screw I had previously ordered from Brownells. It seemed to thread in OK but I want to run a cleanup tap into the threads so of course, I need to know what tap to get. Thanks in advance....



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Old September 10th, 2019, 09:40 AM   #2
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Russ123, All 5 grip screws on Vaqueros, Blackhawks Super Blackhawks, and Single-Sixes use 6x40 screws. Just some advice …. it's never a good idea to chase a cross threaded hole with a tap because it is very easy to get it started crooked and ruin the threads. Using a new 6x40 screw is a much better idea. It will chase the threads but won't "cut" like a tap.

More suggestions: when you reassemble any Ruger SA, it's best to use a small jewelers screwdriver to start and seat the grip screws until they bottom out, then back the screws out about a turn. After all 5 screws have been installed, tighten them down with a proper hollow ground screwdriver. Jeweler's screw drivers can't apply enough torque to strip threads or cross thread screws. Here's what I use: https://www.bing.com/images/search?v...jaxhist=0&vt=0
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Old September 10th, 2019, 12:55 PM   #3
 
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Thanks for the full advice. The new screw did well and as you said it would. I backed out the new screw and the threads were fine.
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