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Self-Tapping Pan Head Screw M1.4–M6 — Black-Zinc Carbon Steel & 304 A2-70 Stainless Steel
A comprehensive range of Phillips cross pan round head self-tapping screws covering M1.4 to M6 in both black-zinc carbon steel and 304 A2-70 stainless steel. Self-tapping screws cut their own thread as they are driven, eliminating the need for pre-tapping in wood, plastic, and thin sheet metal — making them the fastest and most versatile fastener for electronics enclosures, woodworking, model making, and general assembly. The pan (round) head provides a wide bearing surface that distributes clamping load without countersinking, ideal for thin panels and PCB mounting.
Specifications
| Drive Style | Phillips (cross) |
| Head Style | Pan (round) head |
| Screw Type | Self-tapping |
| Material Options | Black-zinc carbon steel / 304 A2-70 stainless steel |
| Thread Sizes | M1.4 / M1.7 / M2 / M2.6 / M3 / M4 / M5 / M6 |
| Length Range | 3mm – 50mm |
| Pack Quantity | 50PCS per pack |
| Origin | Mainland China |
Material Selection Guide
| Material | Best For | Avoid |
|---|---|---|
| Black-Zinc Carbon Steel | Indoor electronics, dry environments, visible assemblies needing black finish | Outdoor, marine, humid environments |
| 304 A2-70 Stainless Steel | Outdoor, marine, food-contact, humid environments, long-term installations | Strong acid environments (use 316 SS instead) |
Thread Size Reference
| Size | Diameter | Typical Application |
|---|---|---|
| M1.4 | 1.4mm | Miniature electronics, eyeglass frames, watch cases |
| M1.7 | 1.7mm | Small electronics enclosures, PCB covers |
| M2 | 2.0mm | Electronics cases, laptop covers, small plastic housings |
| M2.6 | 2.6mm | Electronics enclosures, model making |
| M3 | 3.0mm | General electronics, 3D printer parts, light woodworking |
| M4 | 4.0mm | Medium woodworking, plastic panels, general assembly |
| M5 | 5.0mm | Heavier woodworking, structural plastic assembly |
| M6 | 6.0mm | Heavy-duty wood and plastic fastening |
Key Features
- ✅ Self-tapping design — cuts its own thread in wood, plastic, and thin sheet metal, no pre-tapping required
- ✅ Pan head profile — wide bearing surface, no countersinking needed, sits proud of surface
- ✅ Phillips drive — compatible with standard Phillips screwdrivers and power tools
- ✅ Two material options — black-zinc for indoor/aesthetic use, 304 SS for outdoor/corrosion-resistant applications
- ✅ M1.4–M6 range — covers miniature electronics through general woodworking in one product line
- ✅ 3–50mm lengths — wide length range for thin panels through thick timber
- ✅ 50PCS per pack — cost-effective for project and workshop use
Common Applications
- Electronics enclosure and project box assembly
- PCB and circuit board mounting in plastic housings
- 3D printed part assembly and fastening
- Model making and RC vehicle construction
- Furniture hardware and hinge mounting
- Thin wood panel and plywood fastening
- Outdoor signage and fixture mounting (304 SS)
- Marine and boat interior fitting (304 SS)
Frequently Asked Questions
Q: Do I need to pre-drill a pilot hole?
A: For wood and soft plastics, a pilot hole slightly smaller than the screw diameter is recommended to prevent splitting, especially near edges. For thin sheet metal, a pilot hole equal to the minor thread diameter is required.
Q: What is the difference between black-zinc and black oxide finish?
A: Black-zinc (zinc plated then black chromate treated) provides better corrosion resistance than black oxide. Black oxide is a thin conversion coating with minimal corrosion protection. These screws use black-zinc plating for improved durability.
Package Contents
- 50× Self-Tapping Pan Head Screws (size, length, and material as selected)


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