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Whether you're assembling HVAC ductwork, securing electrical enclosures, or tackling a weekend fabrication project, finding the right self-tapping screw in the right length at the right moment is half the battle. DIYers and tradespeople alike know the frustration of mid-project hardware runs — this 190-piece assortment of #8 wafer head sheet metal screws is built to keep your toolbox stocked and your projects moving.
Each kit contains 190 pieces of #8 stainless steel wafer head self-tapping screws, available in multiple lengths to cover a wide range of material thicknesses. The wafer head profile sits low and wide, providing a broad bearing surface without requiring countersinking. Screws are manufactured from stainless steel for corrosion resistance. Lengths in this assortment typically range from 1/2" to 1-1/2" (approximately 13mm to 38mm); see variant options for the exact length breakdown included in your kit.
These screws are a go-to choice for HVAC duct assembly, metal stud framing, electrical panel fabrication, automotive sheet metal repair, and general-purpose DIY metalworking — anywhere a low-profile, self-threading fastener is needed in thin-gauge materials.
| Drive Type | Phillips #2 |
|---|---|
| Head Style | Wafer Head (Low Profile) |
| Screw Size | #8 |
| Thread Type | Self-Tapping (Sheet Metal) |
| Material | Stainless Steel |
| Finish | Natural Stainless (Silver) |
| Length Range | See variant options |
| Quantity per Kit | 190 pieces |
| Compatible Materials | Sheet metal, aluminum, rigid plastic, light wood panels |
| Pre-Drilling Required | Not required for most sheet metal applications; pilot hole recommended for harder substrates |
| Thread Standard | #8 US Sheet Metal Screw (self-tapping) |
| Corrosion Resistance | Suitable for outdoor and humid environments; contact us to confirm for highly corrosive settings |
A general rule is to select a screw length that allows at least 1/2" (13mm) to 3/4" (19mm) of thread to engage the base material. For example, if you're fastening two layers of 22-gauge sheet metal (each roughly 0.030"/0.76mm thick), a 1/2" screw typically provides adequate thread engagement. This assortment includes multiple lengths so you can match the right one to your material stack-up without a separate hardware run.
Stainless steel #8 self-tapping screws generally provide good tensile and shear strength for light-to-medium fastening tasks in sheet metal, thin wood, and plastic. Exact load capacity depends on the base material, installation depth, and joint design. For structural or load-bearing applications, we recommend consulting an engineer or referring to published fastener load tables for your specific material.
Yes — stainless steel offers solid corrosion resistance for most outdoor, humid, and light-exposure environments. In most cases, these screws will outlast zinc-plated or black oxide alternatives in wet conditions. For highly corrosive environments such as saltwater coastal installations or chemical exposure, contact us to confirm suitability before ordering.
These are #8 US sheet metal screws with a self-tapping thread form. They are designed to cut their own threads into sheet metal, aluminum, and rigid plastic — no pre-tapping is required in most applications. They are generally not intended for use in pre-tapped metric holes; for metric thread compatibility, see our metric screw assortments.
A standard #2 Phillips driver bit fits most #8 wafer head sheet metal screws. This is one of the most common bits included with any power drill or screwdriver set. For best results, use a bit with a snug fit to avoid cam-out, especially when driving into harder metals.
The wafer head sits lower than a pan head while offering a wider bearing surface than a flat (countersunk) head — and it doesn't require countersinking the material. This makes it ideal for applications where you want a near-flush finish on thin sheet metal without the extra prep step. It's a popular choice for HVAC ductwork, electrical enclosures, and automotive panels for exactly this reason.
These screws are designed for sheet metal (steel and aluminum), rigid plastics, and light wood panels. They are commonly used in HVAC duct assembly, electrical enclosures, automotive trim panels, metal stud framing, and general DIY fabrication. For very hard substrates or thick steel plate, a pilot hole is recommended to ease installation and reduce the risk of screw breakage.
