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Normal Topic Whitney Phoenix breechblock hinge retainer screw (Read 315 times)
John in PA
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Whitney Phoenix breechblock hinge retainer screw
Oct 16th, 2024 at 2:38pm
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I have two of these rifles that need the firing pin hole in the breechblock bushed. Both have the screw pin that retains the breechblock hinge pin buggered.  I've never seen what the actual retainer looks like.
Can anyone provide a photo with dimensions (thread pitch, etc) of one of these screw pins? The earlier style extractor doesn't have this part as the hinge pin itself is threaded on the end and screws into the boss on the right side of the receiver. The screw retainer pin is on the actions with this long lever style extractor. (link below)

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John Wells
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jhm
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Re: Whitney Phoenix breechblock hinge retainer screw
Reply #1 - Oct 16th, 2024 at 9:44pm
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There are people here that I am sure could do that for you. One that comes to mind is John Taylor.


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John Taylor
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Re: Whitney Phoenix breechblock hinge retainer screw
Reply #2 - Oct 17th, 2024 at 11:06am
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The retainer screw looks like mine but the extractor is different. I can do the firing bin bushing.
  
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Ballardcrank
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Re: Whitney Phoenix breechblock hinge retainer screw
Reply #3 - Oct 17th, 2024 at 7:38pm
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John in Pa, just measured mine.
Overall length .450 long.
Length of 8-40 thread .125 long.
Rest of retainer is turned  down to .135 diameter .
Hope this helps .
Ballardcrank also in Pa.
  
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Ballardcrank
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Re: Whitney Phoenix breechblock hinge retainer screw
Reply #4 - Oct 18th, 2024 at 1:33pm
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Change on the upper dimensions, I picked up the extractor stop screw ( almost the same as the hinge pin retainer) by mistake.
The correct dimensions are .450 overall length.
8-40 thread length .125.
Remaining shaft .325 long turned down to .108 diameter for hing pin retainer.
First set of dimensions are for left side extractor stop screw.
  
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John in PA
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Re: Whitney Phoenix breechblock hinge retainer screw
Reply #5 - Oct 19th, 2024 at 10:26am
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Thanks very much!
To be clear, the screw is headless, with an 8-40 thread for a length of .125", starting at the slotted end (visible on the right side of the receiver), then the non-threaded portion decreases to .108"  diameter and extends through that portion of the receiver to retain the hinge pin. 

Correct?
  
John Wells
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Re: Whitney Phoenix breechblock hinge retainer screw
Reply #6 - Oct 20th, 2024 at 7:46pm
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Hello John, yes the headless ( slotted) thread section is .125 long then steps down to .108 for the remaining length.
  
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