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Finding the right small-diameter self-tapping screw that won’t rust, strip, or damage thin panels is a recurring challenge for electronics assemblers, HVAC technicians, appliance repair professionals, and precision DIY builders. These Phillips pan head self-tapping screws in A2 304 stainless steel are built for exactly those applications — combining a corrosion-resistant material with a flat tail point that locates cleanly in punched or drilled sheet metal holes before driving.
Each pack contains A2 (304) stainless steel screws with a pan head profile and flat tail self-tapping point, available in thread diameters from M1.4 to M5 and lengths from 4mm (≈5/32") to 20mm (≈3/4"). Quantity options range from 5 to 500 pieces per order, making it easy to source the exact amount needed for a repair job or a production run. The metric thread sizing follows ISO standards, compatible with standard metric tooling.
Typical applications include sheet metal enclosure assembly, consumer electronics chassis fastening, HVAC duct and panel work, small appliance manufacturing, and precision DIY projects requiring a corrosion-resistant fastener in a compact pan head profile. The A2 stainless finish also makes these suitable for light outdoor use where a black zinc or carbon steel screw would corrode over time.
| Drive Type | Phillips (Cross / PH) |
|---|---|
| Head Style | Pan Head |
| Point Type | Flat Tail (Self-Tapping, Type A / AB) |
| Material | A2 Stainless Steel (304) |
| Surface Finish | Natural Stainless (no additional coating) |
| Thread Diameter | M1.4 / M1.7 / M2 / M2.2 / M2.6 / M3 / M3.5 / M4 / M5 — See variant options |
| Thread Length | 4mm (≈5/32") – 20mm (≈3/4") — See variant options |
| Quantity per Pack | 5 / 10 / 20 / 50 / 100 / 200 / 500 pcs — See variant options |
| Thread Standard | Metric (ISO) Self-Tapping |
| Corrosion Resistance | Good — suitable for indoor, humid, and light outdoor use |
| Recommended Driver Bit | PH0 (M1.4–M2) / PH1 (M2–M3) / PH2 (M3–M5) — Contact us to confirm |
| Application | Sheet metal, electronics enclosures, HVAC panels, appliances, precision DIY |
A general rule is to select a length that penetrates the base material by at least 2/3 of the screw’s total length. For example, when fastening a 2mm panel, a screw of 5mm (≈3/16") or longer is typically recommended. For thin sheet metal under 1mm, shorter lengths such as 4mm–6mm are generally sufficient. Available lengths range from 4mm (≈5/32") to 20mm (≈3/4") — see variant options above.
A2 (304) stainless steel self-tapping screws generally provide good tensile strength for light to medium-duty fastening in sheet metal, electronics enclosures, and appliance assembly. They are not typically rated for heavy structural loads. For high-stress or high-vibration applications, a larger diameter or a higher-grade fastener is generally recommended.
Yes. A2 304 stainless steel offers good corrosion resistance suitable for most outdoor and humid indoor environments, and is generally resistant to rust under normal atmospheric conditions. For marine or highly corrosive environments, A4 (316) stainless steel is typically the recommended choice.
Yes. These use a standard Phillips (cross) drive compatible with PH0, PH1, or PH2 bits depending on the screw diameter. Smaller sizes such as M1.4–M2 typically use PH0 or PH1 bits, while M3–M5 generally use PH1 or PH2. Any standard manual or power screwdriver with the correct bit size will work.
These are self-tapping screws with a flat tail point designed to cut their own threads in thin sheet metal. In most cases, no pre-drilling is required for thin-gauge sheet metal. For harder or thicker materials, a pilot hole is generally recommended to prevent stripping or cracking the base material.
A flat tail (also called a blunt point or Type A/AB point) means the screw tip is slightly blunted rather than sharply pointed. This design is typically used in thin sheet metal applications where the screw needs to locate in a punched or drilled hole before driving, reducing the risk of the tip skipping or damaging the workpiece surface during installation.
For electronics and small appliance assembly, M1.4–M2 screws are typically used for PCB covers and thin panels, while M2.5–M3 are common for chassis and enclosure fastening. M4–M5 are generally used for heavier brackets or structural panels. Always verify your component’s thread size specification before ordering.
