As I go to the workbenches I always transfer 'junk' to the workbench storage. My question is how do I scrap something once it's in storage? Suppose I need some screws and there are some items in storage that have screws. How do I break down the item to get the screws? If it just randomly scraps something for the parts then which item is randomly scrapped if there are several with screws? When I'm actually crafting I it seems I only have access to the items already scrapped. Or do I have have to add all items back into my inventory and then one at a time scrap them? There just must be a better way.
I do have the Scrapper perk.
Thanks.