🔩 M1.4–M4 Countersunk Phillips Machine Screws – Nickel Plated, Fully Threaded (3–20mm Overall Length)
You’re fixing a tiny circuit board, repairing a pair of glasses, or mounting a small hinge – and you need a screw that sits flush, drives easily, and won’t rust. These M1.4 to M4 countersunk machine screws are made from carbon steel with a bright nickel plating. The flat 90° head sinks perfectly into a pre‑drilled countersink, leaving a smooth surface. The Phillips (Pozidriv‑compatible) cross recess gives you a secure grip with standard crosshead screwdrivers. Available in diameters M1.4, M1.6, M2, M2.5, M3, M3.5, and M4, with overall lengths from 3mm to 20mm (including head). Fully threaded. Perfect for electronics, instruments, model making, and any precision assembly where a flush finish and moderate corrosion resistance are needed.
✨ Key Features – Nickel Plated Countersunk Phillips Screws
- 🔽 Countersunk flat head (90°) – Sits flush with the surface after proper countersinking. Smooth, snag‑free finish.
- 🧪 Nickel plated carbon steel – Bright, corrosion‑resistant finish. Grade 5 strength for reliable fastening.
- 💪
Phillips / Pozidriv compatible drive – Cross recess works with standard Phillips drivers; also accepts Pozi bits for tighter grip.
- 📏 Wide metric range M1.4, M1.6, M2, M2.5, M3, M3.5, M4 – Covers tiny electronics to light machinery.
- 📐 Overall lengths 3–20mm (including head) – Example: M3 x 6mm means total length from top of head to tip is 6mm. Fully threaded.
- 💪 High quality & affordable – 100% brand new, great value for DIY, repairs, and production runs.
- 🔧 Versatile use – Electronics, instruments, model making, furniture hinges, and precision assemblies.
📏 Available Sizes – M1.4 to M4 Countersunk Screws (Overall Length)
| Thread Diameter (M) |
Thread Pitch (mm) |
Overall Length Range (mm) * |
Head Style |
Drive |
Material / Finish |
| 📐 Length measured from top of head to tip. Fully threaded. Select exact size from dropdown. |
| M1.4 |
0.3 |
3, 4, 5, 6, 8, 10, 12, 14, 16, 18, 20
(exact availability varies) |
Countersunk / flat (90°) |
Phillips (Pozi‑compatible) |
Nickel plated carbon steel (Grade 5) |
| M1.6 |
0.35 |
| M2 |
0.4 |
| M2.5 |
0.45 |
| M3 |
0.5 |
| M3.5 |
0.6 |
| M4 |
0.7 |
* Lengths are typical – exact availability may vary. Please allow minor manual measurement errors. 10 pieces per pack (bulk quantities available – select from dropdown).
❓ Frequently Asked Questions – Nickel Plated 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 “M3 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. To achieve a flush finish, drill a matching 90° countersink hole. Use a small countersink bit (or carefully use a larger drill bit) for these tiny sizes.
3. Are these screws fully threaded? What about longer lengths like 20mm?
Yes – all screws in this range (M1.4 to M4, up to 20mm) are fully threaded from under the head to the tip, giving you maximum grip in shallow holes or when using nuts.
4. Will the nickel plating rust? Can I use these screws outdoors?
Nickel plating provides good corrosion resistance for indoor use and occasional light outdoor exposure (e.g., under cover). For continuous outdoor or marine environments, we recommend stainless steel screws. For most electronics and indoor furniture, nickel plated screws are perfectly adequate.
5. What screwdriver do I need for these tiny screws?
For M1.4–M2, use a #000 or #00 Phillips precision screwdriver. For M2.5–M3.5, a #0 works. For M4, a #1 is suitable. Always use a driver that fits snugly to avoid cam‑out and head damage.
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 (e.g., M3 nut for M3 screw). For small diameters like M1.4, nuts are less common – consider tapping the hole directly.
