The video “Construction screws: Overpriced gimmick? (Are drywall screws better?)” is by Stumpy Nubs (James Hamilton). In this video, Stumpy dives into the world of screws, comparing drywall screws with higher-priced construction screws like GRK and SPAX, while also sharing some of his personal experiences and experiments.
Stumpy begins by reminiscing about a project where he dismantled old benches that had stood the test of time, all thanks to drywall screws. He notes that these screws held up remarkably well, supporting significant weight in his workshop without any issues. However, he emphasizes that while drywall screws can be handy, they are not suitable for structural applications, such as framing houses or building decks.
So, what about those pricier construction screws? Stumpy questions whether the additional features of these screws—like fluted points and serrated threads—are worth the extra cost for everyday projects. To find out, he conducted various tests that led to some surprising discoveries.
Testing Different Screw Types
In one of his tests, Stumpy drives drywall screws into hard maple. He points out that this test isn’t entirely fair since he wouldn’t normally drive screws into hardwood without a pilot hole. Unsurprisingly, the drywall screws resulted in significant splitting along the grain.
Next, he tested coated deck screws, which feature a fluted tip designed to bore a pilot hole. These screws performed better than the drywall screws, but they still didn’t do a great job of clearing out the tiny wood chips from the hole.
Then came the SPAX screws. With their uniquely serrated threads, these screws effectively chewed up the wood fibers and cleared the way for the screw shaft, minimizing splitting even in hardwood. Stumpy notes the presence of tiny wood chips around the SPAX screw heads, showcasing their clever design.
He also tested GRK screws, which have a fluted tip and a few notches stamped along the threads. While not as effective as the SPAX screws, they still performed better than standard fluted tips. Stumpy highlights the importance of head design, noting that drywall screws have a bugle-shaped head intended for drywall rather than wood.
Head Design Matters
Stumpy explains how the head design influences screw performance. The bugle head of a drywall screw can make it appear to embed deeper than other screws, but it can also lead to snapping or stripping out. In contrast, deck screws feature a double bevel beneath their heads that helps them embed more effectively into the wood.
He further elaborates on how the GRK screws, with their single bevel design and aggressive cutting geometry, can bore into wood without stripping the hole. This leads to better holding power. Stumpy’s tests reveal that while all screws can hold significant weight, the design plays a critical role in how well they grip the wood fibers.
Key Takeaways
Stumpy summarizes that drywall screws, while strong enough for non-structural projects, lack features that enhance grip and strength. The fluted tips and serrated threads of higher-end screws help reduce fiber separation, providing a stronger joint. He emphasizes the importance of using a pilot hole, especially with a drill that has a clutch feature, to maximize performance.
In conclusion, Stumpy encourages viewers to consider the features of screws in relation to their projects. Understanding these differences can lead to better choices and ultimately stronger, more reliable constructions.