🔩 Product Overview: M3–M5 Stainless Steel Slotted Pan Head Machine Screws – A2 (304)
If you're working on vintage electronics, antique restorations, or any project where a traditional slotted drive is preferred, these A2 stainless steel pan head slotted screws are a perfect fit. The single slot (flathead) drive allows for precise manual tightening and easy removal without specialized bits. Made from 304 stainless steel, they resist rust and corrosion – ideal for outdoor furniture, marine gear, and kitchen equipment. Available in M3, M4, and M5 metric diameters with lengths from 5mm to 30mm (measured under the head), these fully threaded screws are strong, reliable, and inexpensive. The low‑profile pan head sits flush on surfaces, giving a clean, professional finish.
✨ Why Choose A2 Stainless Slotted Pan Head Screws
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A2 stainless steel (304) – Excellent corrosion resistance for outdoor or humid environments. Won't rust – perfect for marine, coastal, and food‑grade applications.
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Slotted (flathead) drive – Classic single‑slot design allows for easy manual tightening with a standard flathead screwdriver. Ideal for applications where you need precise torque control and frequent disassembly.
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Pan head design – Low‑profile rounded head with a flat bearing surface. Sits flush on panels and distributes clamping force evenly.
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Metric sizes M3, M4, M5 – Versatile diameters for electronics, appliances, furniture, and light machinery.
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Lengths from 5mm to 30mm (under head) – Short screws for thin panels, longer ones for through‑hole applications. Choose exactly what you need.
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Fully threaded, coarse metric pitch – M3x0.5, M4x0.7, M5x0.8. Threads run the entire shank length for maximum grip.
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100% brand new, high quality, inexpensive – Precision threads and clean heads at an affordable price.
📏 Technical Specifications – Slotted Pan Head Screws (M3–M5, A2 Stainless)
| Specification |
M3 |
M4 |
M5 |
| Thread Diameter (d) |
3mm |
4mm |
5mm |
| Thread Pitch (p) |
0.5mm |
0.7mm |
0.8mm |
| Head Style |
Pan head (domed, low profile) |
| Drive Style |
Slotted (flathead / single slot) |
| Material |
A2 Stainless Steel (304 / 18-8) |
| Thread Type |
Fully threaded |
| Length Range (under head) |
5mm – 30mm (select from options) |
| Length Measurement |
From underside of head to tip – excludes head height |
| Finish |
Natural stainless (unplated) |
❓ FAQs – Slotted Pan Head Stainless Screws
🔸 What screwdriver should I use for these slotted screws?
Use a standard flathead (slotted) screwdriver that matches the slot width. For M3, a 2.0–2.5mm blade works well. For M4 and M5, a 3.0–4.0mm blade is ideal. Avoid using a driver that is too wide or too narrow – it will damage the slot.
🔸 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 from the underside of the head (the flat bearing surface) to the tip, not including the pan head. For example, an M4 x 20mm screw has a 20mm threaded shank below the head.
🔸 Will A2 (304) stainless steel rust outdoors?
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 garden furniture, railings, and general outdoor DIY, 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 (M3, M4, or M5) 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 M3, M4, and M5?
We offer lengths from 5mm to 30mm. Please select your desired length from the dropdown options on the product page. Typical increments: 5, 6, 8, 10, 12, 14, 16, 18, 20, 25, 30mm (availability varies by diameter).
🔸 Are these screws magnetic?
A2 stainless is generally non‑magnetic in its annealed state, but cold forming (like thread rolling) can make it slightly magnetic. A light magnetic response is normal and does not affect corrosion resistance.
