Found this weird screw looking thing whilst hiking in the alps

Image from preview.redd.it and submitted by Finnick420
image showing Found this weird screw looking thing whilst hiking in the alps

Clay707 on March 25th, 2019 at 16:10 UTC »

This is a time delay fuse for an artillery or tank shell. I have one as a paper weight on my desk.

XDISAPPOINTINGSALADX on March 25th, 2019 at 17:56 UTC »

Artillery like weapons are often used to trigger avalanches as a safety precaution, could be the remnants of one previously fired. This depends of course wether it was avalanche prone in the first place.

Other wise, the Swiss often do military/militia service training in the Jura mountains opposite the alps, they probably do it in the alps as well. Maybe it’s something left over from this.

wings_of_wrath on March 25th, 2019 at 21:38 UTC »

That is, without a doubt, the fuze from a Swiss "7,5 cm Befestigungs-kanone 1939 L 30" a Swiss fort gun. The fuze itself it's what's known as a "Doppelzünder", or in English, a "combination fuze" or "time and percussion fuze". The round thing in the middle of the image is the delay setting plug, where you can choose between the percussion and time delay settings, where "VZ" is "Versögerung-Zünder" (Delay fuze) and MZ is "Momentan-Zünder" (Percussion fuze).

By the looks of the thing and the fact it's missing the percussion plunger in the nose, I'm going to go on a limb and say this has probably been fired and should be safe, but don't take my word for it, always ask a specialist when dealing with unexploded munitions. Normally, this thing has a gunpowder initiator pellet in the base as well as an "igniferous detonator" (percussion primer) in the middle of it, roughly just above the delay setting plug. I can't tell from the image if those are present or not.

Also, if you want to see what this thing looked like complete, here is the best image I could find: https://upload.wikimedia.org/wikipedia/commons/9/9c/ForteAirolo08.JPG