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M1.7–M6 Black Zinc Plated 304 A2 Stainless Steel Phillips Flat Countersunk Self-Tapping Wood Screw | 50PCS
M1.7–M6 Black Zinc Plated 304 A2 Stainless Steel Phillips Flat Countersunk Self-Tapping Wood Screw | 50PCS
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M1.7–M6 Black Zinc Plated 304 A2 Stainless Steel Phillips Flat Countersunk Self-Tapping Wood Screw — 50PCS
Black zinc plated 304 A2 stainless steel Phillips flat countersunk self-tapping wood screws in metric sizes M1.7 through M6 — combining the corrosion resistance of 304 stainless steel with the aesthetic appeal of a black zinc surface finish. The flat (countersunk) head sits flush with the surface when driven into a countersunk hole, providing a clean, professional appearance in electronics enclosures, audio equipment, furniture, and woodwork. The self-tapping thread cuts its own path in wood, plastic, and thin sheet metal without pre-tapping. Supplied in 50PCS packs for prototyping and small production runs.
Specifications
| Material | 304 Stainless Steel (A2-70) |
| Surface Finish | Black zinc plated |
| Drive Style | Phillips (cross) |
| Head Style | Flat (countersunk) — flush with surface when driven |
| Screw Type | Self-tapping (thread-forming) |
| Size Range | M1.7 / M2 / M2.6 / M3 / M4 / M5 / M6 |
| Length Range | 4mm – 50mm |
| Pack Quantity | 50PCS |
| Origin | Mainland China |
304 A2 Stainless Steel + Black Zinc — Why This Combination
| Property | 304 SS + Black Zinc (this product) | Carbon Steel Black Oxide | Plain 304 SS |
|---|---|---|---|
| Corrosion resistance | High (SS base + zinc coating) | Very low (cosmetic only) | High |
| Appearance | Black (professional, premium) | Black | Silver/brushed |
| Outdoor suitability | Yes | No (rusts quickly) | Yes |
| Electronics use | Excellent (black, non-magnetic) | Poor (rusts in humidity) | Good (silver appearance) |
Metric Screw Size Reference
| Size | Outer Diameter | Typical Application |
|---|---|---|
| M1.7 | 1.7mm | Miniature electronics enclosures |
| M2 | 2.0mm | Electronics enclosures, PCB mounting |
| M2.6 | 2.6mm | Electronics enclosures, plastic housings |
| M3 | 3.0mm | General electronics, 3D printed parts |
| M4 | 4.0mm | Light woodwork, enclosure assembly |
| M5 | 5.0mm | Medium woodwork, furniture |
| M6 | 6.0mm | Heavy woodwork, structural assembly |
Key Features
- ✅ 304 A2 stainless steel — excellent corrosion resistance for outdoor, humid, and marine-adjacent applications
- ✅ Black zinc plated — professional black finish for electronics, audio equipment, and premium woodwork
- ✅ Flat countersunk head — sits flush with the surface for clean, professional appearance
- ✅ Self-tapping thread — cuts its own thread in wood, plastic, and thin sheet metal
- ✅ Phillips drive — compatible with standard Phillips screwdrivers and power driver bits
- ✅ M1.7–M6 range — covers miniature electronics through medium woodwork applications
- ✅ 50PCS pack — cost-effective for prototyping and small production runs
Common Applications
- Electronics enclosure assembly (black finish required)
- Audio amplifier and HiFi equipment chassis assembly
- 3D printed part assembly
- Premium furniture and woodwork (black hardware)
- Outdoor electronics enclosure fastening
- Raspberry Pi and Arduino project enclosures
- Automotive interior trim fastening
Frequently Asked Questions
Q: Does the black zinc plating affect the corrosion resistance of the 304 stainless steel?
A: The black zinc plating adds an additional layer of corrosion protection on top of the 304 stainless steel base. If the zinc coating is scratched or worn, the 304 stainless steel base continues to provide corrosion resistance.
Q: What screwdriver size do I need?
A: M1.7–M2 screws use a PH000 or PH00 Phillips bit. M2.6–M3 screws use a PH0 or PH1 bit. M4–M6 screws use a PH1 or PH2 bit.
Package Contents
- 50× Black Zinc Plated 304 A2 SS Phillips Flat Countersunk Self-Tapping Wood Screw (size and length as selected)
