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Finding the right M2 Phillips countersunk machine screw shouldn't mean compromising on material or length. Whether you're assembling a compact electronics enclosure, mounting a PCB, building an RC model, or finishing a precision hobby project, a mismatched fastener wastes time and mars your work. This listing covers the full M2 flat head Phillips screw range across five material finishes — so you can source exactly what you need in one place.
Each order contains M2 countersunk (flat head) machine screws with a Phillips cross-head drive and a 90° flush-sitting head profile. Available in five material finishes: 304 Stainless Steel, 316 Stainless Steel, Nickel Plating, Black Zinc Plating, and Brass. Lengths run from 3mm (1/8") to 60mm (2-3/8"), with pack sizes of 20, 30, 50, or 100 pieces. All screws follow the ISO metric M2 thread standard (0.4mm pitch).
Typical applications include PCB and SBC mounting (M2 flat head screws for Raspberry Pi, Arduino, and electronics enclosures), precision hobby and RC assembly where a flush surface is required, and cabinetry or panel work where a countersunk Phillips bolt eliminates protrusions. The black zinc variant is popular for tactical builds and dark-finish assemblies, while brass M2 screws are frequently specified for non-magnetic or decorative applications.
| Thread Diameter | M2 |
|---|---|
| Thread Standard | ISO metric (M2 × 0.4mm pitch) |
| Head Style | Countersunk (Flat Head), 90° included angle |
| Drive Type | Phillips (PH) cross-head — PH0/PH1 recommended |
| Available Lengths | 3mm (1/8") — 60mm (2-3/8"); see variant options for full range |
| Material Options | 304 Stainless Steel / 316 Stainless Steel / Nickel Plating / Black Zinc Plating / Brass |
| Pack Sizes | 20 pcs, 30 pcs, 50 pcs, 100 pcs |
| Head Diameter (approx.) | Typically 3.8–4.0mm for M2 CSK — contact us to confirm for specific lengths |
| Corrosion Resistance | 316 SS (marine) > 304 SS (outdoor) > Nickel/Black Zinc (indoor/sheltered) > Brass (non-marine) |
| Magnetic Properties | 304/316 SS: low magnetic; Nickel/Black Zinc: magnetic; Brass: non-magnetic |
| Compatible Fasteners | Standard M2 metric nuts and threaded inserts |
| Country of Origin | Contact us to confirm |
A general rule is to choose a length that allows at least two-thirds of the screw to engage the base material. For M2 screws, lengths range from 3mm (1/8") to 60mm (2-3/8") in this listing. For PCB standoff mounting, 4–8mm is typically sufficient. For thicker panels or stacked assemblies, step up to 12–20mm. Always measure your material stack before ordering.
304 stainless steel is the standard grade, offering good corrosion resistance for most indoor and light outdoor applications. 316 stainless steel adds molybdenum, which significantly improves resistance to chlorides and salt — making it the preferred choice for marine environments, coastal installations, or chemical exposure. For general electronics and DIY use, 304 is typically sufficient.
M2 machine screws are generally designed for light-duty fastening rather than heavy structural loads. They are well-suited for electronics enclosures, PCB mounting, hobby builds, and precision assemblies. For applications requiring higher shear or tensile strength, consider stepping up to M3 or larger. The stainless steel variants generally offer higher strength than nickel-plated or brass options.
Yes, with the right material choice. The 304 stainless steel variant handles most outdoor and humid conditions well. For coastal or marine environments, 316 stainless steel is recommended. Nickel-plated and black zinc-plated screws offer moderate corrosion resistance suitable for indoor or sheltered outdoor use. Brass provides good corrosion resistance in non-marine environments and is non-magnetic.
These screws follow the ISO metric thread standard (M2, 0.4mm pitch per ISO 68-1). They are compatible with standard M2 metric nuts, threaded inserts, and tapped holes. They are not compatible with UNC/UNF (imperial) threads.
Choose 304 stainless for general-purpose corrosion resistance. Choose 316 stainless for marine or high-chloride environments. Choose nickel plating for a bright silver appearance with moderate corrosion resistance, commonly used in electronics. Choose black zinc plating for a matte black finish with good corrosion protection, popular in tactical and aesthetic builds. Choose brass for non-magnetic applications, electrical conductivity, or decorative use.
These screws use a Phillips (PH) cross-head drive. For M2 screws, a PH0 or PH1 screwdriver or bit is typically required. Using the correct bit size reduces the risk of cam-out and head damage, especially on smaller M2 heads. A precision screwdriver set is recommended for hand installation.
Pack sizes are selectable at checkout: 20, 30, 50, or 100 pieces per order. Larger packs offer a lower per-unit cost and are ideal for workshop stock or bulk project use. Select your preferred quantity in the Quantity(Pcs) variant option above.
