Trapdoor barrel thread pitch & dimensions

[tbx-4]

Anyone know the thread pitch and dimensions for the M1884 Springfield Trapdoor barrel
Or better yet, any drawings out there?

Thanks

[bruce drake]

Thread is 10 square threads per inch, Barrel shank length 1.433 inches with 0.875 inches threaded, Major thread diameter 0.900 inches, minor diameter 0.850 inches - barrel diameter nominal 1.0 inches

[tbx-4]

Thank you Bruce!