M5.2 M6.3 Hex Socket Flat Head Self‑Drilling Screws – 410 Stainless Steel
M5.2 M6.3 Hex Socket Flat Head Self‑Drilling Screws – 410 Stainless Steel
M5.2 M6.3 Hex Socket Flat Head Self‑Drilling Screws – 410 Stainless Steel
M5.2 M6.3 Hex Socket Flat Head Self‑Drilling Screws – 410 Stainless Steel
M5.2 M6.3 Hex Socket Flat Head Self‑Drilling Screws – 410 Stainless Steel
M5.2 M6.3 Hex Socket Flat Head Self‑Drilling Screws – 410 Stainless Steel
M5.2 M6.3 Hex Socket Flat Head Self‑Drilling Screws – 410 Stainless Steel
M5.2 M6.3 Hex Socket Flat Head Self‑Drilling Screws – 410 Stainless Steel
M5.2 M6.3 Hex Socket Flat Head Self‑Drilling Screws – 410 Stainless Steel
M5.2 M6.3 Hex Socket Flat Head Self‑Drilling Screws – 410 Stainless Steel
M5.2 M6.3 Hex Socket Flat Head Self‑Drilling Screws – 410 Stainless Steel
M5.2 M6.3 Hex Socket Flat Head Self‑Drilling Screws – 410 Stainless Steel
M5.2 M6.3 Hex Socket Flat Head Self‑Drilling Screws – 410 Stainless Steel
M5.2 M6.3 Hex Socket Flat Head Self‑Drilling Screws – 410 Stainless Steel
M5.2 M6.3 Hex Socket Flat Head Self‑Drilling Screws – 410 Stainless Steel
M5.2 M6.3 Hex Socket Flat Head Self‑Drilling Screws – 410 Stainless Steel
M5.2 M6.3 Hex Socket Flat Head Self‑Drilling Screws – 410 Stainless Steel
M5.2 M6.3 Hex Socket Flat Head Self‑Drilling Screws – 410 Stainless Steel
M5.2 M6.3 Hex Socket Flat Head Self‑Drilling Screws – 410 Stainless Steel
M5.2 M6.3 Hex Socket Flat Head Self‑Drilling Screws – 410 Stainless Steel
M5.2 M6.3 Hex Socket Flat Head Self‑Drilling Screws – 410 Stainless Steel

M5.2 M6.3 Hex Socket Flat Head Self‑Drilling Screws – 410 Stainless Steel

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M5.2 M6.3 Hex Socket Flat Head Self‑Drilling Screws – 410 Stainless Steel

5.2mm x 16mm / 2

Illinois

Pickup currently unavailable

150 Hastings Drive
Buffalo Grove IL 60089
United States

+18479091828
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🔩 Hex Socket Flat Head Self‑Drilling Screws – 410 Stainless Steel (M5.2 & M6.3)

When you need a clean, flush finish and the strength to drill into metal, these hex socket flat head self‑drilling screws deliver. The 410 stainless steel construction gives you higher hardness than 304, so the drill tip stays sharp through sheet metal, steel framing, and hard plastics. A flat head sits nearly flush with the surface, reducing snags and leaving a neat, professional look. The internal hex (Allen) drive allows higher torque without cam‑out, making them ideal for tight spaces where a Phillips bit might slip. Available in two robust diameters — M5.2 and M6.3 — and lengths from 16 mm to 50 mm, this series is built for metal roofing, HVAC ductwork, automotive panels, and mixed‑material connections. No pilot hole, no separate tap — just drill, drive, and you’re done.

⚙️ Key Features – 410 Stainless Hex Socket Flat Head Self‑Drilling Screws

  • 410 stainless steel – harder than 304, provides superior wear resistance and good atmospheric corrosion protection for indoor and outdoor use
  • Self‑drilling tip bores its own pilot hole through sheet metal up to approx. 2 mm – one‑step installation saves time
  • Flat head design sits close to the surface for a smooth, snag‑free finish
  • Internal hex socket drive (Allen) resists cam‑out and accepts higher tightening torque than Phillips drives
  • Available in M5.2 and M6.3 diameters, with thread lengths from 16 mm to 50 mm
  • Sharp, burr‑free threads engage quickly and hold tight in steel, aluminum, wood, and plastic
  • Ideal for metal roofing, steel framing, automotive repair, ductwork, and general fabrication

📋 Technical Specifications – Hex Socket Flat Head Self‑Drilling Screws

Thread Size Thread Diameter (d) Head Diameter (dk) Head Thickness (k) Hex Socket Size (s) Available Lengths (mm)* Drive Material & Finish
M5.2 5.2 mm 11.9 mm 2.8 mm 4 mm 16, 19, 25, 32, 38, 45, 50 Hex Socket (Allen) 410 Stainless Steel, Natural
M6.3 6.3 mm 12.6 mm 2.9 mm 4 mm 16, 19, 25, 32, 38, 45, 50 Hex Socket (Allen) 410 Stainless Steel, Natural

* Lengths are thread length only (measured from under the head). Head dimensions shown in the technical drawing are approximate. All screws are self‑drilling and fully threaded.

❓ Frequently Asked Questions – 410 Stainless Flat Head Self‑Drilling Screws

🔸 Do I need to drill a pilot hole before using these screws?

No. The self‑drilling tip acts like a drill bit and will penetrate sheet metal up to about 2 mm thick, as well as wood and plastic, without a pilot hole. For thicker steel or very hard alloys, a small pilot hole can reduce driving torque, but in most common applications, they are true one‑step fasteners.

🔸 What size Allen key do I need for M5.2 and M6.3 screws?

Both M5.2 and M6.3 screws use a 4 mm hex key (Allen wrench). A high‑quality, correctly fitting key will minimize cam‑out and prolong the life of the socket.

🔸 Is 410 stainless steel suitable for outdoor use?

Yes. 410 stainless offers good atmospheric corrosion resistance and is commonly used for outdoor metal roofing, siding, and automotive applications. It is harder than 304, so it holds its edge longer. For constant saltwater exposure, 316 would be a better choice, but for rain and general outdoor conditions, 410 performs very well.

🔸 How are the screw lengths measured?

All listed lengths are the thread length only, measured from directly under the flat head to the tip. The head thickness is additional, allowing you to accurately match the screw to the material thickness you’re fastening.