The knife was in the toolbox to service military equipment.
the equipment I do not know. :
:
If I remember correctly, its made for field servicing the AK47 and similar rifles.
In ak 47 butt is always a tool kit for full service rifle.
In ak no nuts.
Why wrenches, saw the tree?
In the Soviet conventional military equipment have different standards, so do not be tempted to unscrew and take home. Spanners 9 and 11 almost anywhere in the civil engineering will not be useful.