🔩 Product Overview: M8 & M10 Countersunk Machine Screws – Flat Head Pozi Drive, A2 304 Stainless Steel
When you need a flush finish combined with the superior grip of Pozidriv drive, these M8 and M10 countersunk flat head machine screws are the answer. Made from A2 (304) stainless steel, they offer excellent corrosion resistance, high strength, and a clean silver appearance. The 90° flat head sinks flush into countersunk holes for a smooth, professional surface – ideal for machinery panels, furniture, marine hardware, and structural assemblies. The Pozi (Pozidriv) drive reduces cam‑out compared to standard Phillips, allowing you to apply more torque without slipping. Fully threaded with standard coarse metric pitch, and length is measured including the head for easy matching. Choose your length – these bolts are ready for demanding jobs.
✨ Why Choose A2 Stainless Pozi Countersunk Screws
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A2 stainless steel (304 grade) – Good corrosion resistance, oxidation resistance, and heat resistance. High strength and toughness for long‑term reliability.
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Pozidriv (Pozi) drive – Distinct from Phillips, the extra cross‑recesses provide greater torque transfer and significantly reduce cam‑out. Your driver stays engaged, even under load.
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Countersunk flat head (90°) – Sits flush in tapered holes for a snag‑free, professional finish. Perfect for panel mounting and visible assemblies.
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Metric sizes M8 and M10 – Medium‑to‑large diameters suitable for furniture, machinery, automotive, and marine fastening.
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Fully threaded, coarse metric pitch – Standard threads: M8x1.25, M10x1.5. 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., M8 x 30mm = 30mm overall). Easy to match with original fasteners.
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Grade 4.8 strength – Suitable for general fastening in industrial, furniture, and construction applications.
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Made in China, consistent quality – Precision threads and clean heads. Reliable for professional and DIY use.
📏 Technical Specifications – M8 & M10 Countersunk Pozi Screws (A2 Stainless)
| Screw Size (d) |
Thread Pitch (p) |
Head Diameter (dk) min–max |
Head Thickness (k) |
| M8 |
1.25mm |
14.1 – 14.7mm |
4.5mm |
| M10 |
1.5mm |
17.5 – 18.3mm |
6.0mm |
Note: Length measured as total screw length including head (e.g., M8 x 30mm = 30mm overall). All dimensions manually measured – slight variations may occur. Refer to product options for available lengths.
| Specification |
Details |
| Product Type |
Pozidriv Countersunk Flat Head Machine Screws (Pozi drive) |
| Material |
A2 Stainless Steel (304 / 18-8) |
| Drive Style |
Pozidriv – use PZ2 for M8, PZ3 for M10 |
| 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) |
| Finish |
Natural stainless (unplated, silver) |
❓ FAQs – M8/M10 Countersunk Pozi Screws
🔸 What’s the difference between Pozidriv and Phillips? What driver bit do I need?
Pozidriv has additional smaller cross‑recesses at 45° angles and a blunter tip. A Phillips driver will fit loosely and will cam‑out or damage the recess. For M8, use a PZ2 Pozi driver. For M10, use a PZ3. Using the correct bit gives you much better torque without slipping.
🔸 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 M8 x 30mm screw is 30mm 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: M8x1.25, M10x1.5. This ensures compatibility with standard nuts and tapped holes.
🔸 Will A2 (304) stainless steel rust outdoors or in coastal environments?
A2 stainless is highly resistant to moisture, rain, and humidity – perfect for most outdoor use. For direct saltwater immersion or heavy coastal spray, A4 (316) stainless is better, but for general outdoor furniture, machinery, and marine applications above waterline, 304 lasts for years without rust.
🔸 Can I use these screws with nuts, or are they self‑tapping?
These are standard machine screws – they require a matching metric nut (M8 or M10) or a pre‑tapped hole. They are not self‑tapping. For best corrosion resistance, pair them with A2 stainless nuts.
🔸 What lengths are available for M8 and M10?
Lengths vary – typical ranges: M8: 10–60mm, M10: 12–80mm. Please select your desired length from the dropdown options. If you need a length not listed, contact us.
