⚫ Product Overview: Black M1.4–M3 Phillips Flat Head Machine Screws – Carbon Steel (Grade 8)
Need strong, corrosion‑resistant flat head screws for electronics, appliances, or automotive trim? These black finished carbon steel Phillips countersunk machine screws deliver Grade 8 strength and a sleek dark appearance that blends with black panels and equipment. Available in metric micro sizes M1.4, M2, M2.5, M3 (plus larger M4–M12 as options), they're fully threaded with standard coarse pitch. The 90° flat head sits flush in countersunk holes for a smooth, snag‑free finish – perfect for laptop repairs, furniture assembly, instrument panels, and machinery. Length includes the head, so you get a true total length measurement. Choose from multiple lengths to suit your project.
✨ Why These Black Carbon Steel Flat Head Screws Are a Reliable Choice
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High‑strength carbon steel (Grade 8) – Offers excellent tensile strength and durability for demanding applications. Stronger than standard Grade 5 hardware.
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Black zinc plating – Provides corrosion resistance and a uniform dark finish. Ideal for black anodized parts, powder‑coated panels, and stealth builds.
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Phillips flat (countersunk) head – Sits flush with the surface after countersinking. Leaves a professional, snag‑free finish.
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Metric sizes: M1.4, M2, M2.5, M3, M4, M5, M6, M8, M12 – Covers a wide range from micro electronics up to structural fastening. Select the size you need.
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Fully threaded, coarse metric pitch – Standard GB coarse threads. Threads run the entire length for maximum grip and reliable nut engagement.
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Length measured including the head – No confusion: total screw length from top of flat head to tip. Easy to match with existing fastener lengths.
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Wide application range – Electronics, laptops, furniture, machinery, automotive, and general DIY.
📏 Technical Specifications – Black Flat Head Phillips Screws (Carbon Steel)
| Specification |
Details |
| Product Type |
Phillips Countersunk Flat Head Machine Screws |
| Material |
Carbon steel with black zinc plating |
| Drive Style |
Phillips cross‑head |
| Head Style |
Flat / Countersunk (90°) |
| System of Measurement |
Metric |
| Standard |
GB |
| Thread Sizes (Diameter) |
M1.4, M2, M2.5, M3, M4, M5, M6, M8, M12 |
| Thread Type |
Coarse thread, fully threaded |
| Length Measurement |
Length includes the head (total screw length) |
| Strength Grade |
Grade 8 (high strength) |
| Finish |
Black (zinc plated) |
❓ FAQs – Black Flat Head Machine Screws
🔸 Are these screws fully threaded? How is length measured?
Yes – they are fully threaded from just under the head to the tip. Length is measured including the head (total screw length) – standard for flat head countersunk screws. For example, an M3 x 8mm screw is 8mm long overall from the top of the flat head to the tip.
🔸 What is the difference between Grade 8 and regular carbon steel screws?
Grade 8 fasteners have higher tensile strength than standard Grade 5 or low‑grade hardware. They are heat‑treated for increased durability and are suitable for demanding applications where extra strength is required – such as automotive, machinery, and load‑bearing assemblies.
🔸 Will the black finish rust or wear off?
Black zinc plating provides good corrosion resistance for indoor use and light outdoor exposure. It holds up well against humidity and normal handling. For constant moisture, saltwater, or harsh chemicals, consider stainless steel. With proper use, the finish is durable and long‑lasting.
🔸 What Phillips screwdriver size works for M1.4 through M12?
M1.4–M2: use PH000 or PH00. M2.5–M3: use PH0 or PH1. M4–M5: use PH1 or PH2. M6: use PH2. M8–M12: use PH2 or PH3 (PH2 works for most). Using the correct size prevents stripping.
🔸 Can I use these screws with nuts, or are they self‑tapping?
These are standard machine screws – they require a matching metric nut (M1.4–M12) 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 by size – typical range from 3mm to 60mm depending on diameter. Please select your desired length from the dropdown options. If you need a length not listed, contact us – we may be able to source it.
