Nickel Plated Phillips Pan Head Machine Screws M2 M2.5 — 3mm to 16mm

A general rule is to use a screw length that is 2–3 times the thickness of the material being fastened. For example, when securing a 2mm (≈1/12") plastic panel, an M2×4mm or M2×5mm screw is typically appropriate. For through-hole applications with a nut, ensure enough thread protrudes beyond the material for at least 1.5× the screw diameter in thread engagement. For M2, that means at least 3mm of thread engagement; for M2.5, at least 3.75mm.

A #0 Phillips bit is generally used for M2 screws, while a #1 Phillips bit is typically used for M2.5 screws. Using the correct bit size is important — an undersized bit can cam out and damage the screw head, especially on small-diameter screws. Apply steady downward pressure while driving to maintain bit engagement and reduce the risk of stripping.

A pan head screw has a low-profile rounded top with a flat bearing surface that sits on top of the material — it does not require a countersink. A flat (countersunk) head screw is designed to sit flush with or below the surface in a countersunk hole. Pan head screws are generally used where a flush finish is not required and where the raised head provides a larger bearing surface, such as on PCBs, plastic housings, and thin sheet panels.

Nickel plating provides moderate corrosion resistance and is generally suitable for indoor use and light-duty dry environments. It is typically not recommended for prolonged outdoor exposure, high humidity, or salt spray environments. For outdoor or corrosive applications, stainless steel screws are generally a better choice. If you are unsure whether nickel plating is appropriate for your environment, please contact us before ordering.

Yes. These screws follow the ISO metric thread standard (M2 and M2.5). They are compatible with standard metric nuts, threaded inserts, PCB standoffs, and tapped holes of the matching diameter and pitch. They are not compatible with inch-thread (UNC/UNF) fasteners. Always verify the thread size of your existing hardware before ordering.

M2 and M2.5 machine screws are designed for light-duty fastening applications such as electronics assembly, PCB mounting, and small enclosures. Exact tensile strength depends on the base steel grade. These screws are generally not rated for structural or high-load applications. Contact us to confirm specifications if you need strength data for a specific application.

The 50-piece pack is well suited for prototyping, repair, or one-off projects where you only need a small quantity. The 100-piece pack works well for small production runs or stocking a parts drawer with M2 or M2.5 Phillips pan head screws. The 500-piece pack is typically the most cost-effective option for ongoing production, assembly lines, or bulk restocking.

No. These are standard machine screws and require a pre-tapped hole, threaded insert, or matching nut. They will not cut their own threads into plastic, metal, or other materials. If you need a self-tapping screw for plastic or sheet metal, a different screw type is required. Please contact us if you need help identifying the right fastener for your application.