J frame left hand threads ?

[crsides]

S&W changed the extractor rod threads to left hand threads to keep them from unscrewing during recoil on the magnums. Did they ever go to left hand threads for the J frame? If so, what time frame?

 

[Hair Trigger]

When reading the engineering change data (dash number variations) on the J frame guns in the 4th Ed. catalog, no mention is made of changing the extractor rod threads from right to left-hand thread. I would assume it wasn't done, since it mentions it in all the K and N frame guns, but all I really know is what I've read in the catalog. Someone more familiar with actual smithing or ownership of J frames might have better input.

 

[JP@AK]

Hondo44 may weigh in here, but my recollection is that the J frame, which didn't appear until 1950, always had left hand threads on the extractor rod.

 

[Wiregrassguy]

S&W changed the threads on I frames in 1948 and that carried over to J frames when they came out.

1948: Extractor rod thread direction changed to left hand thread on the I frames.

(SCSW, 4the Ed., Page 494).

 

[crsides]

thanks Guy and guys.

Charlie

 

[Hondo44]

Charlie,


Hair Trigger is correct that the thread was never changed on the J frame but as Jack and Guy posted accurately above, because it started life with a left hand thread.

 

[crsides]

I was concerned that the ejector rod had been change out on my early chief spl since it had left hand threads. But the cylinder and ejector were serial numbered, so I was a bit confounded. Thanks again.