19th century fuze fragment?

[Flamsteed]

Hello.
I found this fragment together with remains of studded shells.

Externally it is characterised by a very large thread pitch, which is smaller internally.
I am thinking perhaps of an Armstrong fuze .
45x29 mm, weight 63 gr.View attachment 1000006158.jpgView attachment 1000006160.jpg

 

[AMMOTECHXT]

Hi Flamsteed and welcome. If you can acquire a reprint of a 19th / mid 19th century treatise on ammunition you might find what you're looking for in that. I know that some of the old fuzes tapered, so it was quick and easy to insert them in a cannon ball or shell, the only interference was when they were almost home. The shell is certainly in very good condition for its age.

 

[Flamsteed]

Thank you.
Unfortunately I only found a few bits.
The shell belongs to a museum.....View attachment 1000006167.jpg