I've found these 3 parts last week. I found those parts all near each other so I think they might be of the same projectile. That's why I post it in 1 forumthread.
I gave the objects names: A, B and C:
A: 3,3 cm diameter on the bottom, 1,1 cm at the top hole. Height: 1,7 cm. At the side of the bottom there's signs of "screw thread" < correct me if my English is bad there please.
B: 3,4 cm diameter, 1,6 cm diameter middle hole. The two holes at the sides have a 0,3 cm diameter. Also screw thread on the side.
C: 2,5 cm diameter of the hole. The hole also has screw thread on the inside. Thickness of metal: 0,6 cm.
I really hope if someone can identify these parts for me, so I know if they belong together or not.
With kind regards,