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Need an M3 screw but not the usual short ones? This range goes from tiny 3mm all the way up to 150mm – perfect for deep thread engagement, standoffs, or custom assemblies. These Phillips pan head machine screws are made from A2 (304) stainless steel, so they resist rust indoors, outdoors, and in humid environments. The round pan head gives a clean, low‑profile finish, and the Phillips drive offers excellent torque transfer without slipping. Whether you’re building a 3D printer, repairing appliances, or working on automotive trim, grab the exact length you need – from M3×3mm to M3×150mm – in the quantity that suits you.
| Thread Size | Length Range (under head) | Thread Pitch | Typical Applications |
|---|---|---|---|
|
M3 |
3mm, 4mm, 5mm, 6mm, 8mm, 10mm, 12mm, 14mm, 16mm, 18mm, 20mm, 25mm, 30mm, 35mm, 40mm, 45mm, 50mm, 60mm, 70mm, 80mm, 90mm, 100mm, 110mm, 120mm, 130mm, 140mm, 150mm |
0.5mm (coarse) |
3D printers, electronics enclosures, RC vehicles, furniture, automotive, machinery, standoffs |
📌 Length measured from under the head (excluding head height). Most lengths are fully threaded. For exact availability per length, see the product selector.
| Parameter | Details |
|---|---|
| Product name | M3 Phillips Pan Head Machine Screws / Bolts |
| Material | A2 stainless steel (304 grade) – standard. Also available in 201 stainless, 316 stainless, or carbon steel on request. |
| Head style | Pan head (round, low dome, flat bearing surface) |
| Drive style | Phillips cross‑head (PH2 recommended) |
| Thread diameter | M3 (3mm nominal major diameter) |
| Thread pitch | 0.5mm (metric coarse) |
| Length range (under head) | 3mm – 150mm (over 25 length options) |
| Finish | Natural stainless steel (silver), uncoated |
| Pack quantity | Selectable per order (e.g., 1, 5, 10, 20, 50, 100, etc.) |
| Applications | Household appliances, furniture, electronics, automotive, machinery, 3D printers, RC models, DIY |
📌 Stainless steel material guide:
• 201 stainless – Suitable for dry environments only; may rust if exposed to water.
• 304 stainless (A2) – Outdoor or humid environments; strong corrosion and acid resistance. (Our standard)
• 316 stainless (A4) – Added molybdenum for superior corrosion and pitting resistance; ideal for seawater and chemical media. (Contact us for custom order)
1. What’s the difference between a pan head and a countersunk flat head?
Pan heads sit above the surface – no need to countersink the hole. They give a clean, slightly domed finish. Countersunk heads require a tapered hole to sit flush. For most DIY and electronic work, pan head is easier and faster because you just drill a straight hole. Choose pan head when appearance matters but you don’t want to countersink.
2. Why does stainless steel sometimes have slight magnetism? Is my screw defective?
No – it’s normal. 304 (A2) is austenitic and generally non‑magnetic, but cold heading during manufacturing can transform some structure to martensite, which is weakly magnetic. This does not affect corrosion resistance or strength. Fully non‑magnetic 304 is available via special annealing (contact us).
3. Are these screws fully threaded even at 150mm length?
Most lengths up to 100mm are fully threaded. For 110mm and longer, there may be a short unthreaded shank under the head due to manufacturing limitations. If you need fully threaded for very long lengths, please contact us to confirm.
4. What Phillips bit size do I need for M3 screws?
M3 screws typically use a PH1 or PH2 bit. PH1 fits more snugly, but PH2 works as well. Using the correct size prevents stripping and ensures good torque transfer.
5. Can I use these screws with M3 nuts or into tapped holes?
Yes – they are standard M3 machine screws. Use them with M3 nuts (metric) or into pre‑tapped M3 holes. They are not self‑tapping – do not drive into untreated wood or metal without a pilot hole and tapping.
6. Do you offer other materials like 316 stainless or black zinc?
This listing is for A2 (304) stainless. For 316 stainless (marine grade), 201 stainless, or carbon steel with black zinc/nickel plating, please contact us – we can source or manufacture custom orders.
