Choosing the right M2 x 4mm screws is essential for laptops, WiFi cards, heatsinks, and other compact electronics. This guide highlights five reliable options, each offering distinct materials, finishes, and pack sizes to fit different applications. All products listed are suitable for precision mounting and are designed to resist stripping and corrosion in everyday use.
| Product | Brand | Head Type | Material | Quantity |
|---|---|---|---|---|
| Deal4GO 10-pack M2 x 4 mm | Generic | Phillip Flat Head | Nickel Plated | 10 pieces |
| METALLIXITY Phillips Flat Head Screws M2 x 4mm | METALLIXITY | Flat Head | Carbon Steel | 150 pieces |
| MroMax 30Pcs M2 x 4mm Pan Head | MroMax | Pan Head Phillips | 304 Stainless Steel | 30 pieces |
| iexcell 100 Pcs M2 x 4mm Hex Socket | iexcell | Hex Socket Head | 304 Stainless Steel | 100 pieces |
| iexcell 100 Pcs M2 x 4mm Hex Socket (Black Oxide) | iexcell | Hex Socket Head | Alloy Steel 40Cr | 100 pieces |
Below you’ll find concise, objective details about each pick, followed by a practical buying guide to help you compare options for your specific setup.
Deal4GO M2 x 4mm Screw Pack
This pack features a thin flat head with a Phillips drive. It has a shoulder diameter of about 1.85–1.98 mm and a 4 mm shoulder length not including the head. The head diameter is 4.0–4.3 mm with a head thickness around 0.7–0.8 mm. Applications include WiFi cards, laptops, multi IO boards, webcams, keyboards, and some palmrests and base plastics. The nickel plating provides modest corrosion resistance and a dark finish that reduces visibility on many devices.
METALLIXITY M2 x 4mm Phillips Flat Head Screws, 150Pcs
These carbon steel, black-coated screws are designed for delicate assemblies in electronics and small devices. They are flat head with a 2 mm diameter thread and 4 mm length, suitable for metal, plastic, or sheet components. A set of 150 pieces provides ample replacements for hobby projects and repairs. The cross slot at the recess ensures consistent torque, reducing cam-out during installation.
MroMax 30Pcs M2 x 4mm Pan Head Screws
Made from 304 stainless steel, these pan head screws offer reliable corrosion resistance and full threading. The head diameter is 4 mm with a 1.6 mm thickness across the shank, and the thread length is 4 mm. They’re designed for computers, cameras, and other compact electronics where a flush, secure fit is important. The Philips drive provides straightforward installation with good torque control.
iexcell 100 Pcs M2 x 4mm Hex Socket Head Cap Screws Kit
This kit includes 100 pieces of M2 x 4mm hex socket head cap screws, stainless steel 304, with a 3.8 mm head diameter and 1.5 mm hex drive size. It also includes a compatible hex key for convenient installation. The precise dimensions and stainless construction make these screws suitable for electronics, cameras, and mechanical assemblies requiring strong, compact fasteners with a clean appearance.
iexcell 100 Pcs Black Oxide M2 x 4mm Hex Socket Screws
These 100-piece alloy steel screws come with a black oxide finish and a 12.9 grade strength rating, offering superior hardness and torque resistance for demanding applications. They’re M2 x 4 mm with hex socket drive and include a 1.5 mm hex key for ease of use. The black oxide finish helps minimize glare and blends well with many hardware projects that require a discreet aesthetic.
Kadrick Metric Screw Assortment, 660 Pcs
This extensive assortment includes multiple M2 sizes (including 4 mm lengths) with 12.9 grade alloy steel, black zinc plated finish, and a practical plastic storage box. The variety supports broader project needs, including electronics enclosures and small mechanical assemblies. The finished finish offers rust resistance and a tidy setup for organized workspaces.
Buying Guide: Key Considerations For Choosing M2 x 4mm Screws
When selecting M2 x 4mm screws, consider material, finish, head design, drive type, and package size. Stainless steel provides corrosion resistance, while carbon steel with a protective coating minimizes rust in hobbyist environments. Flat heads are ideal where a flush surface is needed, while pan heads offer more capture depth in loose assemblies. Hex socket drives enable precise torque with hex keys, reducing the risk of cam-out in small fasteners. For electronics, choose sizes with tight tolerances and consistent thread pitch to ensure reliable mounting. If you’re outfitting several devices, a multi-pack with various head styles can simplify repairs and upgrades.
Durability is another factor. Stainless models resist rust over time, though they may be slightly more expensive than standard carbon steel options. Finishes like black oxide can help with aesthetics and concealment in metal housings but may offer slightly less corrosion resistance than stainless steel. For critical builds, ensure the screws have a stable head profile and uniform thread engagement to prevent stripping during installation. Finally, verify the pitch and length precisely match your device—M2 x 4mm is common, but a few variants exist in tight tolerances that matter for snug fittings.
Applications across these selections include laptops, SSD heatsink components, WiFi cards, cameras, and small electronic enclosures. Always store your fasteners in a labeled container to keep track of length, head type, and material, which helps prevent cross-application mistakes during assembly or repair work.