Common screws usage between S&W...

J

jrothWA

New member
"I" frame and "J" frames???

Possible future son-in-law was mentioning that he sometimes carries his Grandfathers .32 caliber S&W revolver.

He has to be careful when opening the cylinder as it pulls off forward.

Showed a photo and it APPEARS that it is an "I" frame and the crane retaining screw was replaced by a different screw and it not seating in the crane pivot groove. Replaced screw head is a "phillips" head not a fine slot.

So, DOES / DID the crane retention screw interchange between the two frames??

What is the thread designation if it needs tii be chased with a threading tap to clear original threads??

Thanks.
 
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That's a factory fitted part. Not only does it retain the yoke (crane) it also sets the endshake of the yoke. That said, the screw next to it is roughly the same screw. You can try Numrich or Brownells or maybe even S&W for the part. I believe the I and J frames screws would be the same.

Jim
 
First, there should be three screws at the bottom of the side plate, one short and two long. The short screw should go at the back; if someone put it in the front, what you describe will happen. Put the short screw in the back, then try one of the long screws in the front. If the yoke swings easily, problem solved. If it is tight, try the other long screw.

If the front screw is missing entirely, you will need a new one. The I and old J screws would be the same, but the new J frame has a different screw and a different system. Get a J frame screw (you can probably get the blue, a nickel one might be harder to find). You will then have to fit it by taking a bit off the side of the inside end. That can usually be done by screwing it in, then opening the yoke a few times, which will be hard to do. Then remove the screw and file a bit off where the wear shows. Take it easy and do a little at a time until the yoke moves easily. If it has end play, you took off too much.

Jim
 
Well, took the crane screw from an

1985 J-frame. and determine the thread is a 5-44. Talk about and odd-ball!
But at an real honest to good hardware store, that has three new additions
of "pull-drawers" that are marked "Gun Screws" [made in china :(]
and got a 1" long screw with filster head.

Some now all I need is to determine if the original I-frame screw, was a headless, so I can get the head turned down and make a "dog-point" on the opposite end to rife in the crane groove.
 
Those screws are not "headless"; they are fililster head. As to standards, in many cases S&W and Colt screws don''t conform to standards because the companies were around before there were standards.

Jim
 
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