A sheet metal screw can be used on light sheet metal gauges.

• A. False
• B. Not recommended
• C. True
• D. Only with washers

Answer: (C)

Sheet metal screws are designed to cut their own threads in metal, so they work well for joining light-gauge sheet metal. The metal is thin enough that the screw can form threads as it goes in, giving a solid grip without needing tapping tools. When using them, pick a length that provides enough engagement without poking through the far side, and consider a pilot hole to guide the screw and prevent tearing. A washer isn’t always required, but you’d use one if you need to distribute load or protect the edge in high-load or edge-heavy situations. So, they’re appropriate for light sheet metal gauges.