🔩 Product Overview: M3 Countersunk Phillips Machine Screws – Nickel Plated Carbon Steel (3–30mm)
Need a strong, corrosion‑resistant fastener that sits completely flush with the surface? These M3 countersunk flat head Phillips machine screws are made from carbon steel with a bright nickel plating – giving you a clean, silver finish and good rust protection. The 90° flat head sinks perfectly into countersunk holes, leaving a smooth, snag‑free surface ideal for furniture, electronics, appliances, and light machinery. Fully threaded with standard M3 coarse pitch (0.5mm), and available in lengths from 5mm to 30mm (measured under the head). The Phillips drive works with standard PH1 bits for easy installation. 100% brand new, high quality, and affordable – perfect for professional and DIY projects.
✨ Why These M3 Nickel Plated Countersunk Screws Are a Workshop Essential
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Nickel plated carbon steel – Bright, corrosion‑resistant finish. Provides good protection for indoor and light outdoor use. Clean, professional appearance.
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Countersunk flat head (90°) – Sits flush in tapered holes for a smooth, snag‑free surface. Ideal for panel mounting and visible assemblies.
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M3 metric diameter – fully threaded – Standard coarse pitch (0.5mm). Threads run the entire shank length for maximum grip in thin materials.
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Multiple length options: 5mm to 30mm (under head) – Available in 5, 6, 8, 10, 12, 16, 20, 25, 30mm. Perfect for thin panels or thicker assemblies.
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Phillips drive – Works with standard PH1 bits. Quick and secure installation with common tools.
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100% brand new, high quality, inexpensive – Reliable performance at an affordable price point.
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Wide application range – Furniture, electronics, appliances, machinery, automotive trim, and general DIY.
📏 Technical Specifications – M3 Nickel Plated Countersunk Screws
| Specification |
Details |
| Product Type |
Phillips Countersunk Flat Head Machine Screws |
| Thread Size (Diameter) |
M3 (3mm) |
| Thread Pitch |
0.5mm (standard metric coarse) |
| Thread Type |
Fully threaded |
| Head Style |
Countersunk flat head (90°) |
| Drive Style |
Phillips cross‑head (use PH1 bit) |
| Material |
Carbon steel |
| Surface Treatment |
Nickel plated (bright silver) |
| Length Range (under head) |
5mm, 6mm, 8mm, 10mm, 12mm, 16mm, 20mm, 25mm, 30mm (select from options) |
| Length Measurement |
Under head – from flat bearing surface to tip (head not included) |
❓ FAQs – M3 Countersunk Nickel Plated Screws
🔸 How is length measured for these countersunk screws?
For countersunk screws, length is measured from the underside of the head (the flat bearing surface) to the tip, not including the head. For example, an M3 x 10mm screw has a 10mm threaded shank. This matches the measurement method stated in the product description.
🔸 Are these screws fully threaded? What is the thread pitch?
Yes – they are fully threaded from just under the head to the tip. The thread pitch is standard M3 coarse: 0.5mm. This ensures compatibility with standard M3 nuts and tapped holes.
🔸 Will the nickel plating rust or wear off?
Nickel plating provides good corrosion resistance for indoor and light outdoor use. It holds up well for furniture, appliances, and electronics. With repeated driving, the recess may show some wear, but the overall finish is durable for most general use. For constant moisture or saltwater, we recommend stainless steel.
🔸 What Phillips screwdriver size should I use for M3 screws?
Use a PH1 Phillips screwdriver bit. This provides the best engagement and prevents stripping. A quality PH1 bit is standard for M3 screws.
🔸 Can I use these screws with nuts, or are they self‑tapping?
These are standard machine screws – they require a matching M3 metric nut or a pre‑tapped hole. They are not self‑tapping. For best results, pair them with steel or stainless M3 nuts.
🔸 What lengths are available for M3?
We offer M3 lengths from 5mm to 30mm: 5, 6, 8, 10, 12, 16, 20, 25, and 30mm. Please select your desired length from the dropdown options. If you need a length not listed, contact us.
