🌊 Product Overview: A4 Stainless Steel Phillips Pan Head Screws (M2–M8, DIN 7985)
If you’ve ever watched regular steel screws turn into rusted messes on a boat dock or coastal deck, you know why marine-grade stainless matters. These A4 (316) stainless steel Phillips pan head machine screws are built for saltwater, chemical exposure, and harsh outdoor conditions – far more corrosion resistant than standard A2. Available in M2 through M8 metric diameters and lengths from 4mm to 80mm (measured under the head), they meet DIN 7985 standards with a clean, fully threaded design. Use them for marine hardware, outdoor furniture, kitchen equipment, or any project where rust just isn’t an option. The Phillips pan head gives you a low‑profile, professional finish, and the A4 material means you won’t be replacing them next season.
✨ Why Choose A4 (316) Stainless Phillips Pan Head Screws?
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A4 (316) stainless steel – Marine-grade with added molybdenum. Superior resistance to chlorides, salt spray, and industrial chemicals. Perfect for boats, coastal homes, and outdoor kitchens.
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Phillips pan head design – Rounded top with a flat bearing surface. Sits flush on panels, distributes clamping force evenly, and looks clean on finished work.
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DIN 7985 standard – Precision head dimensions and consistent thread geometry. No surprises when you need a replacement.
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Fully threaded from under the head – Threads run the entire shank length. Maximum grip in thin materials, ideal for through‑hole applications with nuts.
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Metric sizes M2, M3, M4, M5, M6, M8 – Covers everything from tiny electronics enclosures up to medium‑duty marine or architectural fastening.
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Length range 4mm–80mm (under head) – Short screws for PCB standoffs, long ones for sandwiching thick panels. Choose exactly what your project needs.
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Non‑magnetic with excellent toughness – A4 stainless remains largely non‑magnetic even after cold forming, and it’s tough enough for structural use in corrosive environments.
📐 Technical Specifications – A4 Stainless Pan Head Screws (DIN 7985)
| Specification |
Details |
| Product Type |
Phillips Pan Head Machine Screws – DIN 7985 |
| Material |
A4 Stainless Steel (316 / 1.4401) – marine grade |
| Drive Style |
Phillips cross‑head |
| Head Style |
Pan Head (round top, flat bearing surface) |
| System of Measurement |
Metric |
| Screw Sizes (Thread Diameter) |
M2, M3, M4, M5, M6, M8 |
| Thread Pitch (coarse) |
M2x0.4, M3x0.5, M4x0.7, M5x0.8, M6x1.0, M8x1.25 |
| Thread Type |
Fully threaded (full thread from under head to tip) |
| Length Range |
4mm to 80mm (measured from underside of head – excludes head height) |
| Grade |
A4 (316) – superior corrosion resistance |
| Standard |
DIN 7985 |
| End Type |
Open / flat end |
| Shape |
Round |
❓ FAQs – A4 (316) Stainless Phillips Pan Head Screws
🔸 What’s the difference between A2 (304) and A4 (316) stainless steel?
A4 (316) contains molybdenum, which greatly improves resistance to chlorides – that means saltwater, de-icing salts, and many industrial chemicals. A2 is fine for most indoor and general outdoor use, but if you’re near the ocean, on a boat, or in a chemical plant, A4 is the smarter choice. It costs a bit more but lasts far longer in harsh environments.
🔸 Are these screws fully threaded? How do I measure length correctly?
Yes – they are fully threaded from just under the head all the way to the tip. Length is measured from the underside of the head (the flat bearing surface) to the tip. The pan head itself is additional. For example, an M5 x 20mm screw has 20mm of threaded shank plus the head height. Always check your hole depth or nut position accordingly.
🔸 Will these screws rust in saltwater?
A4 (316) stainless is highly resistant to saltwater corrosion. It’s the standard for marine rigging, boat hardware, and coastal construction. While no stainless is 100% rust-proof in all conditions (crevice corrosion can occur in stagnant, low‑oxygen areas), A4 is the best choice you can make for most saltwater applications. Rinse occasionally for maximum lifespan.
🔸 What Phillips screwdriver size works for M2 through M8?
Use PH0 or PH00 for M2 and M3 (PH0 is safest). PH1 for M4 and M5. PH2 for M6 and M8. A good quality Phillips bit that fits snugly prevents stripping – avoid using worn or undersized drivers.
🔸 Can I use these screws in food preparation equipment?
Absolutely – A4 (316) stainless is widely used in the food and pharmaceutical industries because it resists corrosion from acids and cleaning agents, and it’s easy to sanitize. The pan head design has no crevices that trap debris, making it a hygienic choice.
🔸 Do you offer matching nuts or washers in A4 stainless?
These screws are sold individually, but A4 stainless steel nuts, flat washers, and lock washers are available separately in our store. Search for “A4 stainless nuts” or contact us for a matching set recommendation.
