M2 & M2.5 Countersunk Phillips Screws – A2 Stainless Steel, Fully Threaded (2–60mm Overall Length) $1.75 USD

M2 & M2.5 Countersunk Phillips Screws – A2 Stainless Steel, Fully Threaded (2–60mm Overall Length)

Name: M2 & M2.5 Countersunk Phillips Screws – A2 Stainless Steel, Fully Threaded (2–60mm Overall Length)
Brand: HomeDIYer
SKU: GLFBQLPBRTQJD004191x20
Price: 1.75 USD
Availability: InStock

$1.75 USD

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By HomeDIYer^®

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🔩 M2 & M2.5 Countersunk Phillips Screws – A2 Stainless Steel, Fully Threaded (2–60mm Overall Length)

You’re repairing a pair of glasses, mounting a small PCB, or assembling a miniature hinge – and you need tiny, rust‑proof screws that sit perfectly flush. These M2 and M2.5 countersunk machine screws are made from A2 stainless steel (304), so they won’t corrode indoors or out. The flat, 90° head sinks flush into a pre‑drilled countersink, leaving a smooth, snag‑free surface. Phillips drive works with standard crosshead screwdrivers. Available in overall lengths from 2mm to 60mm (including the head). Fully threaded for maximum grip. Perfect for electronics, model making, eyewear, and precision instrument repair.

✨ Key Features – M2 & M2.5 Countersunk Phillips Machine Screws

🔽 Countersunk flat head (90°) – Sits flush with the surface after proper countersinking. Ideal for smooth, professional finishes.
🛡️ A2 stainless steel (304) – Excellent corrosion resistance, oxidation resistance, and heat tolerance. Won’t rust like carbon steel.
📏
Phillips drive – Standard cross recess works with common screwdrivers. Good torque transfer with reduced cam‑out.
📏 M2 and M2.5 metric threads – Tiny diameters perfect for small‑scale fastening in electronics, optics, and hobby work.
📐 Lengths from 2mm to 60mm (overall, including head) – Example: M2 x 5mm means total length from top of head to tip is 5mm. Fully threaded.
💪 Coarse pitch, fully threaded – Provides maximum grip in shallow holes or through‑nut applications.
🧰 Widely used – Electronics enclosures, 3D printers, RC models, eyewear, musical instruments, and precision DIY.

📏 Specifications – M2 & M2.5 Countersunk Screws (A2 Stainless)

Thread Diameter

Overall Length (mm, including head) *

Thread Pitch (mm)

Head Diameter (approx., mm)

Head Height (mm)

Material

📐 Overall length = from top of head to tip (total screw length). Fully threaded. Select exact size from dropdown.

2, 3, 4, 5, 6, 8, 10, 12, 16, 20, 25, 30, 35, 40, 45, 50, 55, 60

0.4

~3.5‑3.8

~1.3

A2 304 Stainless

M2.5

2, 3, 4, 5, 6, 8, 10, 12, 16, 20, 25, 30, 35, 40, 45, 50, 55, 60

0.45

~4.4‑4.7

~1.5

* Lengths are typical – exact availability may vary. Please allow minor manual measurement errors. Head dimensions are approximate based on standard DIN/ISO countersunk head geometry.

📋 Detailed Dimensional Data – M2 & M2.5 Countersunk Screws

Thread Size	Pitch (mm)	Head Diameter (mm)	Head Height (mm)	Material	Finish
M2	0.4	3.5 – 3.8	1.3	A2 stainless	Natural
M2.5	0.45	4.4 – 4.7	1.5	A2 stainless	Natural

❓ Frequently Asked Questions – M2 & M2.5 Countersunk Screws

1. How do I measure the length of a countersunk screw?

For countersunk (flat head) screws, the length is measured overall – from the top of the head to the tip. So an “M2 x 5mm” screw has a total length of 5mm including the head. This is different from pan head screws, which are measured under the head.

2. Do I need to countersink the hole for these screws to sit flush?

Yes – these are true 90° countersunk screws. For the head to be flush (or slightly recessed), you must drill a matching 90° countersink hole. Use a countersink bit slightly larger than the head diameter. In very soft materials like plastic or thin wood, you can sometimes tap the head in, but proper countersinking gives the best result.

3. Are these screws fully threaded?

Yes – all M2 and M2.5 screws in this range are fully threaded from under the head to the tip. This gives you maximum grip even in shallow holes.

4. Can I use these screws outdoors? Will they rust?

A2 stainless (304) is highly corrosion‑resistant and suitable for outdoor use in most environments – including humidity, rain, and coastal areas. For continuous saltwater immersion, A4 (316) is better, but for general outdoor electronics, garden equipment, and furniture, A2 is excellent and will not rust.

5. What Phillips screwdriver size do I need for M2 and M2.5 screws?

For M2 screws, use a #000 or #00 Phillips. For M2.5, a #0 works well. Precision screwdriver sets typically include these small sizes. Always match the bit snugly to avoid slipping or damaging the recess.

6. Can I use these screws with a nut? What size nut fits?

Yes – these are machine screws. Use standard metric nuts: M2 nut (0.4mm pitch) or M2.5 nut (0.45mm pitch). They will also thread into pre‑tapped holes of the same size. They are not self‑tapping; for wood or plastic, drill a pilot hole and use a nut or threaded insert.