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Tired of stopping mid-project to hunt for the right screw size? DIYers and tradespeople who work with sheet metal, wood, and fiberglass know how quickly a missing fastener can derail a job. This 210-piece assortment puts six of the most-used M4.2 lengths in one organized box so you're always ready.
Each screw is machined from 410 stainless steel and features a wafer head with Phillips drive. Sizes range from M4.2×13mm to M4.2×50mm (roughly ½" to 2"), covering the full spectrum of light-gauge sheet metal and panel fastening tasks. Total weight is approximately 531 g.
Whether you're installing HVAC ductwork, securing roofing panels, assembling metal shelving, or fastening fiberglass enclosures, these self-tapping sheet metal screws deliver a tight, corrosion-resistant hold — indoors or out.
Perfect for weekend projects — attach metal brackets, secure ductwork, or fasten panels without needing a separate drill bit or pilot hole step.
Keep a kit on the truck for duct assembly and panel fastening. Six sizes mean fewer trips to the supply house mid-job.
Assemble metal enclosures, fiberglass housings, and plastic panels with a corrosion-resistant fastener that holds up in demanding environments.
| Thread Diameter | M4.2 |
|---|---|
| Lengths Available | 13 mm / 19 mm / 25 mm / 32 mm / 38 mm / 50 mm |
| Head Style | Wafer (Pan) Head |
| Drive Style | Phillips |
| Point Type | Self-Drilling (TEK) |
| Thread Type | Coarse, Full Thread |
| Material | 410 Stainless Steel |
| Finish | Natural Stainless |
| Total Quantity | 210 Pieces |
| Package Weight | Approx. 531 g (1.17 lb) |
| Storage | Labeled transparent compartment box |
| Application | Metal, wood, fiberglass, plastic — indoor & outdoor |
No. The self-drilling tip is designed to bore through light-gauge sheet metal and similar materials without a pre-drilled pilot hole, saving time and reducing the number of tools needed.
They are suitable for metal, wood, fiberglass, and plastic. The sharp coarse threads draw materials together and provide a secure hold across a wide range of substrates.
Yes. 410 stainless steel offers good corrosion and oxidation resistance, making these screws suitable for outdoor applications including high-humidity, cold, and high-temperature environments. For highly corrosive marine environments, 316 stainless steel is generally recommended instead.
A standard power drill or cordless screwdriver with a Phillips #2 bit is typically sufficient. For sheet metal applications, a variable-speed drill set to a moderate torque is recommended to avoid stripping the head.
These are coarse-thread self-tapping screws. The exact pitch follows standard sheet metal screw specifications for M4.2 diameter — typically around 1.41 mm. Please contact us to confirm if your application requires a precise pitch specification.
While possible for softer materials like wood or plastic, a power drill is strongly recommended for sheet metal applications. The self-drilling tip requires consistent rotational force to penetrate metal cleanly.
All 210 screws come in a durable transparent compartment box with labeled dividers for each of the six sizes. This makes it easy to identify and retrieve the correct length without sorting through loose fasteners.
