not to "Screw" your playthrough
As it turns out, there are plenty of possibilities to screw around in the world of Fallout 4. Commonwealth is the land of many opportunities. If you find yourself screwed, there are tons of solutions. If you are screwing around a bit, you can use the help of merchants to obtain missing material. If your needs are big, there are places to farm the material. Lastly, if you need the material on a constant basis, there are Junk items you would like to collect. This guide is compatible with any version of Fall out 4, be it PC, Xbox or PS.
Items to hunt and the Scrapper Perk
The Desk Fans. The Typewriters and Hot Plates. These are the items you will be looking for to resupply yourself with Screws. Desk Fans and Hot Plates are the best ones, as they are effective in terms of weight and value(Desk Fan breaks into two Gears, two Screws and two pieces of Steel while Hot Plate breaks into piece of Cooper, Screw and two Circuitries ).Also, they are the ones you will meet a lot. Any office building you will encounter, and not only office, will provide you with tons of Desk Fans. Same story is with Hot Plate. Any building that has kitchen, or some sort of dining room, in it will have Hot Plates. Apart from the items mentioned above, you can also find Screws in different types of Toys, Globes and other Junk items. But. They are less encountered than Fans, Hot Plates and Typewriters.
Here is a funny story about Screws. They are mostly used to craft some upgrades for ranged weapons. At the same time, ranged weapons will be the source of Screws if you skill the Scrapper Perk. Every time you will Scrap a ranged weapon you will get some amount of the material. The more upgraded the weapon is, the more mat you will get. You might also want to put another point in Scrapper Perk. It will not only provide you with more high-tech mats when scrapping items, but will also highlight any item that contains material tagged for search.
Toys and the Police Station
Let's start with toys. It turns out they are more efficient when it comes to screwing. And here I’m talking about Atomatoys. Wilson Atomatoys and the buildings you can find them in. The toys and their parts are source of not only Screws, but also Gears, Springs and Steel. You will find lots of Wilson Atomatoys in Wilson Atomatoys Corporate HQ and Wilson Atomatoys Factory. First building is situated to the right from the Diamond City. The HQ is guarded by the Superb Mutants and their pets. Once you clear the place out, you should have around 60+ pieces of the material. Inside the building, apart from usual Junk items like Desk Fan and Toy Car, you will Giddyup Buttercups (they give three Gears, five pieces of Steel, four Springs and four Screws) and Giddyup Buttercup Bodies (they give two pieces of Steel, two Springs and two Screws). Other than that, there will be other parts of the pony toy. They will provide you with Steel, Springs and Gears, but won't give Screws.
Same story is with seconds building - Wilson Atomatoys Factory. It will also supply you with Giddyup Toys. However the numbers will be smaller, so you will end up with the amount of Screws around 40 pieces. Also, the building is situated more southern than HQ, so it has more difficult enemies. The Factory is situated to the far South-East. Almost at the end of the map. If you are going to visit the Factory, make sure you pay a visit to Arlen Glass. He is an NPC situated in the Slog. He will give you the quest regarding Wilson Atomatoys Factory. You can find the Slog in the far north-east part of the map. The Slog is a small location that is inhabited only by Ghouls. Arlen Glass is one of these Ghouls. He will be in the outbuilding that is situated to the right from the Tarberry Pool. Don't worry! All the Ghouls in the location are friendly. They won't bite!
Lastly, there is Cambridge Police Station. It's the place where you first meet Paladin Dance. It is far from Sanctuary, to the South-East. Here you can find tons of items, apart from the good old Desk Fans, that will supply you with different mats, as well as with Screws.
If you have a lot of Caps, or like to trading with merchants
As I’ve said before, Screws can also be bought from different merchants around the world of Commonwealth. Let's start with Trashcan Carla. Probably, she will be the first merchant you will meet, as she often travels around the world and can be found in Bunker Hill. Bunker Hill is the city situated to the Far East. You can find merchant wing to the right from the main entrance. Carla will sell shipment of Screws. It contains 25 pieces of the material.
Diamond City will be another place where you can buy a shipment. Visit the Diamond City Market. Search for Arturo. He stands behind the bar with Japanese Protectron. Arturo is ranged weaponry dealer,but he also sells shipments with different mats, one of whichis shipment of Screws. If you happen to not discover Diamond City, it is situatedfar from Sanctuary, to the South-East.
Next merchant you might want to visit is Rufus Rubins from Goodneighbor. To find the man you want to find Hotel Rexford first. As you enter the city, pass the Guns by holding to the left and turn left to pass by the Third Rail to the left. In front of you will be Memory Den and to the left from Memory Den will be Hotel Rexford. Once inside, you will find Rufus to the left, sitting near the window or on the couch, or he can just be around the entrance area. He also has shipment of Screws.
Lastly, if you are friends with Railroad, you can talk to Tinker Tom. He also sells shipments of Screws and other cool stuff. If you haven't met Railroad faction yet, you can find them in the Old North Church. The church is situated in the eastern part of the map, beneath the Bunker Hill and to the east from Trinity Tower. Once you are in the church, find the way into the basement. It is located to the right from the main entrance. After you explore basement and find the switch, you will need to enter the password in the switch. The pass is RAILROAD. To input it in the switch just activate matching letters from any word.