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Whether you're assembling electronics, grounding electrical panels, building custom copper bus bars, or working on precision mechanical projects, finding the right fastener in the right material can be a real bottleneck. Standard steel screws corrode, stainless lacks conductivity, and brass can be hard to source in small diameters. These copper Phillips pan head machine screws are designed for engineers, hobbyists, electricians, and makers who need a fastener that works as hard as the rest of their build.
Each screw features a pan head profile with a Phillips (cross) drive recess, machined from solid copper alloy. Thread diameters span M2 through M8, with lengths ranging from 4mm (≈5/32") to 40mm (≈1-9/16"), covering the most common metric fastener sizes used in electronics and light mechanical assemblies. Available in quantity packs from 1 piece to 600 pieces — choose the combination that fits your project scale.
Typical use cases include PCB standoff and mounting screw applications, grounding connections in electrical enclosures, copper bus bar and terminal block assembly, and decorative or specialty hardware projects where a copper finish is required. The ISO metric thread profile ensures compatibility with standard metric nuts, threaded inserts, and tapped holes across a wide range of equipment.
| Material | Copper alloy |
|---|---|
| Head Type | Pan head (round top, flat bearing surface) |
| Drive Type | Phillips (cross recess) |
| Thread Standard | ISO metric (M-series) |
| Thread Diameter Range | M2, M2.5, M3, M4, M5, M6, M8 |
| Length Range | 4mm (≈5/32") – 40mm (≈1-9/16") |
| Recommended Driver Bit | PH0 (M2–M2.5), PH1 (M3–M4), PH2 (M5–M8) |
| Finish | Natural copper (bare, uncoated) |
| Quantity Options | 1, 2, 4, 5, 10, 20, 25, 30, 40, 50, 60, 100, 150, 200, 300, 400, 600 pcs |
| Tensile Strength | See variant options — contact us to confirm for specific alloy grade |
| Country of Origin | Contact us to confirm |
A general rule is to select a length that allows the screw to penetrate the base material by at least 1.5× the thread diameter. For example, an M4 screw (4mm / ≈5/32" diameter) should typically engage at least 6mm (≈1/4") into the receiving material. Available lengths in this listing range from 4mm (≈5/32") to 40mm (≈1-9/16"). When in doubt, size up — you can always trim excess thread, but you cannot add length.
Copper fasteners are generally softer than steel and are typically used in low-to-moderate load applications. They are not recommended for structural or high-torque joints. For precise load ratings, please contact us to confirm — strength varies by alloy grade and diameter.
Copper has naturally good corrosion resistance and performs well in humid or mildly corrosive environments. However, copper can react with certain chemicals and dissimilar metals (galvanic corrosion). For marine or highly corrosive settings, verify material compatibility before use.
These screws follow the ISO metric thread standard (M-series), which is the international standard used across electronics, machinery, and precision equipment worldwide. They are generally compatible with standard metric nuts, hex standoffs, and threaded inserts of the same pitch. If you are unsure of the thread pitch for a specific diameter, contact us to confirm before ordering.
Yes — copper is an excellent electrical conductor, making these screws well-suited for grounding connections, bus bar assemblies, electrical panel work, and PCB mounting where conductivity matters. Always verify current ratings and insulation requirements for your specific application.
The correct bit size depends on the screw diameter. As a general guide: PH0 is typically used for M2–M2.5, PH1 for M3–M4, and PH2 for M5–M8. Using the correct bit size prevents cam-out and protects the head recess — especially important with copper, which is softer than steel.
Yes — this listing offers quantity tiers ranging from as few as 1 piece up to 600 pieces per order, with per-unit cost decreasing at higher quantities. Select your preferred size and quantity combination directly from the variant options above. For custom bulk orders beyond listed quantities, contact us.
