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Tired of pilot holes slowing down your build? Whether you're a weekend DIYer tackling a metal roof patch or a contractor running HVAC ductwork, having the right self-drilling screw makes all the difference. This 290-piece set is built for professionals and hobbyists who need reliable, fast-driving fasteners that hold tight the first time.
Each screw is M4.8 in diameter, crafted from 410 stainless steel with a black oxide finish. The set includes 290 Phillips truss-head self-drilling screws plus one bonus Phillips drill bit, covering a wide range of sheet metal and light structural applications. Thread diameter is M4.8 (approximately 3/16"), with a drill-point tip engineered to pierce metal without pre-drilling.
Use these screws for metal-to-metal joints on steel roofing and framing, metal-to-wood connections in shed construction and outbuilding repairs, and plastic panel fastening in HVAC, signage, and enclosure work. The black finish blends cleanly into dark substrates for a finished, professional look.
Drive through steel roofing panels and corrugated cladding without pre-drilling — faster installation, cleaner finish.
Secure sheet metal ducts, brackets, and enclosures with screws that bite on contact and hold under vibration.
Join metal-to-wood framing members quickly and reliably for sheds, outbuildings, and garden structures.
Keep a bulk supply on hand for metal panel repairs, equipment enclosures, and general sheet metal fabrication tasks.
| Thread Diameter | M4.8 (~3/16") |
|---|---|
| Head Style | Truss / Modified Phillips |
| Drive Type | Phillips (PH2) |
| Point Type | Self-Drilling (Drill Point) |
| Material | 410 Stainless Steel |
| Finish | Black Oxide |
| Quantity | 290 screws + 1 drill bit |
| Suitable Substrates | Sheet metal, thin steel, wood, select plastics |
| Package Weight | 876 g |
| Screw Length | See variant options |
No. The drill-point tip is designed to self-pierce sheet metal and thin steel without pre-drilling, saving time on installation.
Yes. 410 stainless steel is a martensitic grade and is magnetic, unlike 304 or 316 stainless steel.
Self-drilling screws of this size are typically rated for sheet metal up to approximately 3–4 mm thick. For thicker stock, a pilot hole is recommended.
Yes. The 410 stainless steel construction and black oxide finish provide good corrosion resistance for outdoor use, though prolonged exposure to salt spray may require additional protection.
A PH2 (Phillips #2) bit is recommended. A compatible Phillips drill bit is included in the package.
Yes. These screws are commonly used for metal-to-wood joints such as attaching steel framing to timber in shed and outbuilding construction.
The truss (modified Phillips) head has a wider, lower-profile bearing surface that distributes clamping force over a larger area, reducing the risk of pull-through in thin materials and minimizing cam-out during driving.
