🔩 Product Overview: Countersunk Phillips Machine Screws – Nickel Plated Steel (M3, M4, M5, M6)
Need a fastener that sits flush with the surface and resists everyday corrosion? These nickel plated steel Phillips countersunk flat head machine screws are a smart choice for furniture, appliances, electronics, and automotive trim. The bright nickel finish provides a clean, silver appearance while offering moderate rust protection. The 90° flat head sinks perfectly into countersunk holes, leaving a smooth, snag‑free surface. Fully threaded with standard coarse metric pitch, and length is measured including the head for easy matching. Available in M3, M4, M5, and M6 diameters with various lengths – perfect for replacing stripped screws or assembling new projects.
✨ Why Choose Nickel Plated Countersunk Phillips Screws
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Nickel plated steel – Bright, corrosion‑resistant finish that looks great on finished products. Provides good protection for indoor and light outdoor use.
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Phillips countersunk flat head – Sits flush in tapered holes for a professional, snag‑free surface. Ideal for panel mounting and visible assemblies.
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Metric sizes M3, M4, M5, M6 – Covers the most common small‑to‑medium diameters for furniture, electronics, machinery, and automotive applications.
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Fully threaded, coarse metric pitch – Standard threads: M3x0.5, M4x0.7, M5x0.8, M6x1.0. Threads run the entire length for maximum grip.
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Length measured including the head – Total screw length from top of flat head to tip (e.g., M5 x 20mm = 20mm overall). Easy to match with original fasteners.
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Grade 4.8 strength – Suitable for general fastening in furniture, appliances, and light industrial assemblies.
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Made in China, consistent quality – Precision threads and clean heads. Reliable for everyday DIY and professional use.
📏 Technical Specifications – Nickel Plated Countersunk Screws (M3–M6)
| Screw Size (d) |
Thread Pitch (p) |
Head Diameter (dk) min–max |
Head Thickness (k) |
| M3 |
0.5mm |
5.2 – 5.5mm |
1.7mm |
| M4 |
0.7mm |
7.1 – 7.6mm |
2.6mm |
| M5 |
0.8mm |
8.5 – 8.9mm |
3.1mm |
| M6 |
1.0mm |
10.5 – 11.2mm |
3.6mm |
Note: Length measured as total screw length including head (e.g., M5 x 20mm = 20mm overall). All dimensions manually measured – slight variations may occur. Refer to product options for available lengths.
| Specification |
Details |
| Product Type |
Phillips Countersunk Flat Head Machine Screws |
| Material |
Carbon steel with nickel plating |
| Drive Style |
Phillips cross‑head (use PH1 for M3/M4, PH2 for M5/M6) |
| Head Style |
Flat / Countersunk (90°) |
| System of Measurement |
Metric |
| Grade |
4.8 |
| Thread Type |
Fully threaded, coarse pitch |
| Length Measurement |
Length includes head (total screw length) |
❓ FAQs – Nickel Plated Countersunk Screws
🔸 How is length measured for these countersunk screws?
For countersunk screws, length is measured as total screw length including the head – from the top of the flat head to the tip. For example, an M5 x 20mm screw is 20mm long overall. This matches common fastener standards and makes it easy to replace existing screws.
🔸 Are these screws fully threaded? What pitch do they have?
Yes, all screws are fully threaded from under the head to the tip. They use standard metric coarse pitches: M3x0.5, M4x0.7, M5x0.8, M6x1.0. This ensures compatibility with standard nuts and tapped holes.
🔸 Will the nickel plating rust or wear off?
Nickel plating provides good corrosion resistance for indoor use and light outdoor exposure. With repeated driving, the recess and thread tips may show some wear, but the finish holds up well for furniture, appliances, and automotive trim. For constant moisture or saltwater, use stainless steel.
🔸 What Phillips screwdriver size works for M3 through M6?
M3–M4: use PH1. M5–M6: use PH2. Using the correct size prevents stripping. A quality PH2 bit will handle M5 and M6 comfortably.
🔸 Can I use these screws with nuts, or are they self‑tapping?
These are standard machine screws – they require a matching metric nut (M3–M6) or a pre‑tapped hole. They are not self‑tapping. For best results, pair with steel or stainless nuts of the same thread size.
🔸 What lengths are available for each diameter?
Lengths vary – typical ranges: M3: 4–30mm, M4: 5–40mm, M5: 6–50mm, M6: 8–60mm. Please select your desired length from the dropdown options. If you need a length not listed, contact us.
