Big Flat Head Phillips Self Tapping Screws – 316 Stainless Steel, M2–M6

🔩 Big Flat Head Self‑Tapping Screws – 316 Stainless Steel (M2–M6)

When standard heads pull through or sit too small, these 316 stainless steel big flat head self‑tapping screws step in. The oversized flat head gives you a wide, load‑spreading bearing surface that prevents the screw from sinking into thin sheet metal, plastic, or wood — no separate washers needed. Made from genuine marine‑grade 316 (A4) stainless steel, they deliver the ultimate corrosion resistance for saltwater, chemical, and extreme outdoor environments where 304 just isn’t enough. The sharp self‑tapping thread bites instantly and forms its own tight thread, letting you fasten through metal sheet, enclosures, boat hardware, and structural brackets without pre‑tapping. A deep Phillips drive gives positive bit engagement and reduces cam‑out even when you’re working overhead or in tight spots. Available from M2 through M6 with lengths from 6 mm up to 60 mm, this series has the exact size for your toughest marine, automotive, and outdoor fastening jobs.

⚙️ Key Features – 316 Stainless Big Flat Head Self‑Tapping Screws

• Marine‑grade 316 stainless steel – provides extreme corrosion resistance against saltwater, chemicals, and harsh outdoor exposure
• Big flat head design creates a wide bearing surface that prevents pull‑through and distributes clamping force evenly
• Self‑tapping thread cuts cleanly into sheet metal, wood, fiberglass, and plastic without a pre‑tap or nut
• Phillips drive recess ensures stable, centered torque transfer and minimal cam‑out
• Covers M2, M2.5, M3, M4, M5, and M6 thread diameters – ideal for everything from electronics to structural brackets
• Lengths from 6 mm to 60 mm let you match the screw precisely to your material thickness
• Non‑magnetic and work‑hardening – safe around sensitive electronics and stays tight under vibration

📋 Technical Specifications – 316 Stainless Big Flat Head Self‑Tapping Screws

* Lengths are thread length only (excluding head). Exact dimensions and head diameters are shown in the product photos. Select your preferred size and length from the listing options.

❓ Frequently Asked Questions – 316 Stainless Big Flat Self‑Tapping Screws