M4.2 Self-Tapping Sheet Metal Screws 410 Stainless Hex Head
M4.2 Self-Tapping Sheet Metal Screws 410 Stainless Hex Head
M4.2 Self-Tapping Sheet Metal Screws — 410 Stainless Steel Hex Washer Head
Get the job done right with these high-strength M4.2 (#8) self-tapping sheet metal screws. Crafted from 410 stainless steel, these hex washer head screws are engineered to cut their own threads quickly and securely into sheet metal, light steel framing, and lath-to-metal applications — no pre-tapping required. Whether you're tackling HVAC ductwork, metal roofing, steel framing, or general fabrication, these screws deliver a fast, reliable, and corrosion-resistant fastening solution.
Key Features
- Material: 410 Stainless Steel — excellent corrosion resistance and long-lasting durability
- Head Style: Hex Washer Head — provides a wider bearing surface for a secure, flush fit
- Drive Style: Hex Socket — works with standard hex/nut drivers for fast, efficient installation
- Quick-Tapping Design: Sharp, precision-formed threads cut cleanly into metal without pre-drilling
- CE Certified — meets relevant quality and safety standards
- Pack Quantity: 50–99 pcs — ideal for both small repairs and larger projects
- Model Number: M4.2 (equivalent to #8)
Applications
- Sheet metal fabrication and assembly
- HVAC ductwork and ventilation systems
- Metal roofing and wall cladding
- Lath-to-metal fastening
- Light steel framing and construction
- General DIY metalworking projects
Specifications
| Thread Size | M4.2 (#8) |
| Material | 410 Stainless Steel |
| Head Style | Hex Washer Head |
| Drive Style | Hex Socket |
| Certification | CE |
| Quantity | 50–99 Pcs per pack |
| Country of Origin | Made in Mainland China |
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Learn more: OSHA guidance on hand and power tools
Frequently Asked Questions
Q: What materials can these M4.2 self-tapping screws fasten into?
A: These M4.2 stainless steel self-tapping screws are designed primarily for sheet metal, light steel framing, and lath-to-metal applications. Their sharp, precision-formed threads allow them to cut directly into the material without requiring a pre-tapped hole, making them ideal for HVAC ductwork, metal roofing, and general fabrication work.
Q: What tool do I need to drive these hex washer head screws?
A: These screws feature a hex socket drive style, so they are compatible with standard hex nut drivers, hex bit drivers, or socket wrenches. This ensures fast, efficient installation and a secure, consistent torque without cam-out.
Q: Are these screws rust-resistant for outdoor or wet environments?
A: Yes — made from 410 stainless steel, these self-tapping sheet metal screws offer strong corrosion resistance, making them suitable for both indoor and outdoor applications where exposure to moisture is a concern.
Q: How many screws come in a pack?
A: Each pack contains between 50 and 99 pieces, giving you plenty of fasteners for repairs, small-scale builds, or larger metalworking projects.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.