In theory, two pieces of similar metal in space will bond together if they touch each other. This is known as cold welding, where atoms in the metals share electrons and permanently bond. However, in real life, we wouldn’t expect this to happen easily. Most metals form an oxide layer when exposed to air, which acts as a barrier to prevent bonding. In space, where there is no air, metals wouldn’t have this protective layer. However, astronauts’ tools are coated with plastic to prevent cold welding. While this is not a common problem in space, it has occurred before, and space engineers must be aware of it.
https://www.spacecentre.nz/resources/facts/physics/metals-fuse.html