🔩 M1–M2.5 Countersunk Phillips Machine Screws – Nickel Plated Steel, Fully Threaded (Overall Length Includes Head)
You’re repairing a pair of eyeglasses, mounting a tiny PCB, or restoring a delicate instrument – and you need screws that are small, strong, and won’t rust. These M1 to M2.5 countersunk screws are made from carbon steel with a bright nickel plate. The flat, 90° head sinks flush into a pre‑drilled countersink, leaving a smooth, snag‑free surface. Phillips drive works with precision crosshead screwdrivers. Fully threaded, with length measured overall including the head. Available in M1, M1.2, M1.4, M1.6, M2, and M2.5 diameters, with lengths from 3mm to 12mm (select from dropdown). Perfect for watches, small electronics, hobbyist models, and any micro‑assembly where a flush finish and corrosion resistance matter.
✨ Key Features – Micro Countersunk Phillips Screws (Nickel Plated)
- 🔽 Countersunk flat head (90°) – Sits flush with the surface after proper countersinking. Ideal for smooth, professional finishes.
- 📏
Phillips drive – Standard cross recess fits precision screwdrivers. Good torque control for tiny screws.
- 🧪 Nickel plated carbon steel – Bright, corrosion‑resistant finish. Moderate rust protection for indoor use.
- 📏 Micro metric sizes M1, M1.2, M1.4, M1.6, M2, M2.5 – Perfect for miniature assemblies, electronics, and model making.
- 📐 Overall length includes head (3–12mm) – Example: M2 x 5mm means total length from top of head to tip is 5mm. Fully threaded.
- ⚙️ Coarse pitch, fully threaded – Standard metric threads with full thread engagement for maximum grip.
- 🔧 Widely used – Eyeglasses, watches, small electronics, RC models, medical devices, and precision instruments.
📏 Specifications – M1 to M2.5 Countersunk Phillips Screws (Nickel Plated)
| Thread Diameter (M) |
Thread Pitch (mm) |
Head Diameter (dk) – mm |
Head Height (k) – mm |
Overall Length Range (mm) * |
Material / Finish |
| M1 |
0.25 |
1.7–2.0 |
0.6 |
3, 4, 5, 6, 8, 10, 12
(exact availability varies) |
Carbon steel / Nickel plated |
| M1.2 |
0.25 |
1.8–2.1 |
0.9 |
| M1.4 |
0.3 |
2.6–3.0 |
1.0 |
| M1.6 |
0.35 |
2.7–3.2 |
1.2 |
| M2 |
0.4 |
3.5–3.8 |
1.3 |
| M2.5 |
0.45 |
4.4–4.7 |
1.5 |
* Overall length includes the head. All screws are fully threaded. Head dimensions may have small tolerances – refer to photo for exact data. Select your size from the dropdown.
📋 Why Nickel Plated Steel for Micro Screws?
| Property |
Benefit |
| Nickel plating |
Provides a bright, slightly shiny finish with moderate corrosion resistance – ideal for indoor electronics and instrument repair. |
| Carbon steel core |
Strong and affordable. Grade 4.8 strength is sufficient for miniature fastening. |
| Fully threaded |
Maximum thread engagement in thin materials – no weak unthreaded shank. |
| Countersunk head |
Flush fit prevents snagging – perfect for sliding mechanisms and tight assemblies. |
❓ Frequently Asked Questions – Micro Countersunk Screws
1. How do I measure the length of a countersunk screw?
For countersunk screws, the length is measured overall – from the top of the head to the tip. So an “M2 x 6mm” screw has a total length of 6mm including the head. This matches our listing.
2. Do I need to countersink the hole for these screws to sit flush?
Yes – these are true 90° countersunk screws. For a flush finish, drill a matching 90° countersink hole. Use a tiny countersink bit (or carefully use a larger drill bit) for these micro sizes.
3. Are these screws fully threaded?
Yes – all M1 to M2.5 screws in this range are fully threaded from under the head to the tip, giving you maximum grip in shallow holes.
4. Will the nickel plating rust? Can I use these screws outdoors?
Nickel plating provides moderate corrosion resistance – fine for indoor use (electronics, instruments). For outdoor or high‑humidity environments, we recommend stainless steel. For most miniature indoor repairs, nickel‑plated screws are perfectly adequate.
5. What Phillips screwdriver do I need for M1 to M2.5?
Use a #000 or #00 Phillips precision screwdriver. Regular household screwdrivers are too large. Always use a driver that fits snugly to avoid damaging the tiny cross recess.
6. Can I use these screws with a nut? What size nut fits?
Yes – these are machine screws. Use standard metric nuts of the same thread size (M1, M1.2, etc.). However, these very small nuts are less common – we recommend tapping the hole directly or using a threaded insert.
