🔩 Phillips Flanged Pan Head Machine Screws – 304 / 316 Stainless Steel, Built‑in Washer (3–60mm Lengths)
You’re bolting down a panel, assembling outdoor furniture, or installing marine hardware – and you want a screw that spreads the load without needing a separate washer. These flanged pan head screws have a wide, integrated flange that acts like a built‑in flat washer. Made from your choice of 304 or 316 stainless steel, they resist rust in everything from humid workshops to saltwater environments. The Phillips drive works with standard crosshead screwdrivers, and the low‑profile pan head gives a clean finish. Available in thread diameters from 1.4mm up to 8mm, with lengths from 3mm to 60mm (under head). Fully threaded. Perfect for electronics, furniture, marine gear, and general assembly where corrosion resistance and a wider bearing surface are needed.
✨ Key Features – Flanged Pan Head Stainless Steel Screws
- 🔘 Flanged pan head (integrated washer) – The wide flange distributes clamping force, prevents pull‑through, and eliminates the need for a separate flat washer.
- 🛡️ 304 or 316 stainless steel – Choose 304 for general corrosion resistance (indoor/outdoor) or 316 for marine and chemical environments (superior saltwater resistance).
- ✨
Phillips drive – Standard cross recess for easy driving with common screwdrivers. Good torque transfer.
- 📏 Wide metric range M1.4 to M8 – From tiny M1.4 for miniature electronics up to M8 for medium‑duty fastening.
- 📐 Lengths from 3mm to 60mm (under head) – Fully threaded for maximum grip. Select exactly what you need.
- ✨ Burr‑free, precision threads – Smooth surface, even force distribution, and no thread slipping.
- 🏭 Widely used – Industrial equipment, furniture, marine hardware, electronics, and outdoor structures.
📏 Specifications – Flanged Pan Head Screws (304 / 316 Stainless Steel)
| Thread Diameter (M) |
Thread Pitch (mm) |
Typical Lengths (mm, under head) * |
Flange Diameter (approx. mm) |
Material Options |
| 📐 Length measured from underside of head (below flange) to tip. Fully threaded. Select size and material from dropdown. |
| M1.4 |
0.3 |
3, 4, 5, 6, 8, 10, 12, 14, 16, 20, 25, 30, 35, 40, 45, 50, 55, 60
(exact availability varies) |
~4 |
304 Stainless / 316 Stainless |
| M2 |
0.4 |
~5 |
| M2.5 |
0.45 |
~6 |
| M3 |
0.5 |
~7 |
| M3.5 |
0.6 |
~8 |
| M4 |
0.7 |
~11 |
| M5 |
0.8 |
~12 |
| M6 |
1.0 |
~12 |
| M8 |
1.25 |
~17 |
* Lengths are typical – exact availability may vary. Flange diameters are approximate. Based on single‑batch manual measurement – small errors possible. Select your required size from the dropdown.
📋 304 vs. 316 Stainless Steel – Which One Do You Need?
| Material |
Corrosion Resistance |
Best For |
Price |
| 304 Stainless (A2) |
Good – resists rust in humid, indoor, and light outdoor environments. Slight pitting risk in saltwater. |
Furniture, electronics, general outdoor, kitchen appliances. |
Lower |
| 316 Stainless (A4) |
Excellent – contains molybdenum. Resists saltwater, chlorides, and harsh chemicals. True marine grade. |
Boat fittings, coastal construction, chemical plants, medical devices. |
Higher |
❓ Frequently Asked Questions – Flanged Pan Head Screws
1. How is a flanged pan head different from a regular pan head?
A flanged pan head has a wide, integrated washer right under the head. This flange distributes clamping force over a larger area, preventing pull‑through in soft materials (plastic, thin metal). It also saves you from having to install a separate flat washer.
2. Are these screws fully threaded? How do I measure the length?
Yes – all screws in this range are fully threaded from under the head (just below the flange) to the tip. Length is measured from that same point – the underside of the head (excluding the flange thickness) to the tip. So an “M4 x 10mm” screw has a 10mm threaded shaft.
3. Can I use these screws outdoors or in saltwater?
Yes – choose 304 for most outdoor applications (rain, humidity, coastal air). For continuous saltwater exposure (e.g., boat fittings, docks), choose 316 stainless steel. 316 contains molybdenum, which resists pitting and crevice corrosion from chlorides.
4. What size screwdriver do I need for these Phillips drives?
Use a #0 or #1 Phillips for M1.4–M2.5, #1 for M3–M4, #2 for M5–M6, and #2 or #3 for M8. Always use a driver that fits snugly to avoid cam‑out and head damage.
5. Do I need to countersink the hole for these screws?
No – flanged pan head screws are designed to sit on top of the surface. The flange rests against the material, providing a wide bearing area. No countersinking needed.
6. Can I use these screws with a nut? What size nut fits?
Yes – these are machine screws. Use standard metric nuts of the same thread size and pitch. For best corrosion matching, choose the same material (304 or 316) for the nut.
