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Get the clean, dark look you want without sacrificing corrosion resistance. These Phillips pan head self-tapping screws are made from genuine A2/304 stainless steel, then hardened and finished with a high‑temperature oxidation process that turns the surface a rich, matte black. Unlike painted or zinc‑plated black screws, the black layer is chemically bonded to the stainless substrate — it won’t peel, chip, or expose raw steel that rusts. The classic pan head sits flush and neat on sheet metal, plastic, wood, and composites, while the sharp self‑tapping thread cuts its own path. From precision electronics and automotive trim to outdoor enclosures and marine hardware, you get the good looks of black oxide with the staying power of 304 stainless. Available in a wide size range from M1.7 up to M6.3, this lineup covers everything from micro‑fastening to medium‑duty structural assembly.
| Diameter | Thread Size | Typical Length Range (mm) | Head Style | Drive | Material & Finish |
|---|---|---|---|---|---|
| M1.7 | 1.7 mm | 4 – 16 | Pan Head | Phillips | 304 Stainless Steel, Black Oxide (High Temp) |
| M2 | 2.0 mm | 4 – 20 | Pan Head | Phillips | 304 Stainless Steel, Black Oxide (High Temp) |
| M2.3 | 2.3 mm | 6 – 25 | Pan Head | Phillips | 304 Stainless Steel, Black Oxide (High Temp) |
| M2.6 | 2.6 mm | 6 – 30 | Pan Head | Phillips | 304 Stainless Steel, Black Oxide (High Temp) |
| M3 | 3.0 mm | 8 – 40 | Pan Head | Phillips | 304 Stainless Steel, Black Oxide (High Temp) |
| M3.5 | 3.5 mm | 10 – 50 | Pan Head | Phillips | 304 Stainless Steel, Black Oxide (High Temp) |
| M4 | 4.0 mm | 10 – 60 | Pan Head | Phillips | 304 Stainless Steel, Black Oxide (High Temp) |
| M4.8 | 4.8 mm | 12 – 70 | Pan Head | Phillips | 304 Stainless Steel, Black Oxide (High Temp) |
| M5 | 5.0 mm | 16 – 80 | Pan Head | Phillips | 304 Stainless Steel, Black Oxide (High Temp) |
| M6 | 6.0 mm | 20 – 100 | Pan Head | Phillips | 304 Stainless Steel, Black Oxide (High Temp) |
| M6.3 | 6.3 mm | 25 – 120 | Pan Head | Phillips | 304 Stainless Steel, Black Oxide (High Temp) |
* Lengths depend on the pack you select. All screws comply with GB/T equivalent dimensional standards. Length is thread length only, excluding the head.
It’s real 304 stainless steel. The black color comes from a high‑temperature oxidation process that chemically darkens the surface without paint or plating. It won’t chip, peel, or rub off, and the underlying material stays corrosion‑resistant.
No. The black oxide layer is an integral part of the stainless steel and does not reduce its corrosion resistance. You still get the full benefit of 304 stainless in outdoor, damp, or marine environments — just in a matte black finish.
In thin sheet metal (up to about 1.5 mm), you can often drive them directly. For thicker steel, hard plastics, or dense wood, a small pilot hole (about 80% of the screw diameter) reduces torque and gives you the cleanest grip.
Yes. The self‑tapping thread bites well into softwoods, hardwoods, and sheet metal. For very dense hardwoods, a pilot hole is recommended to prevent snapping.
Use a #0 bit for M1.7–M2, #1 bit for M2.3–M3, #2 bit for M3.5–M5, and #3 bit for M6 and M6.3. A clean, unworn bit minimizes cam‑out and preserves the drive recess.
