Description
Reviews
| Brand | - |
| Category | Industrial Small Parts / Connectors and Fasteners |
| Origin | - |
| Material Grade | 304/316 Stainless Steel |
| Head Type | Countersunk Flat Head |
| Drive Type | Phillips #2 |
| Thread Diameter | 4.2 mm (M4.8) |
| Point Style | Twin-Tail Self-Drilling |
| Surface Finish | Plain Stainless Steel |
| Primary Application | Corrugated Steel Sheets |
| Package Quantity | 100 Pieces per Box |
| Max Drill Capacity | Up to 3mm Carbon Steel |
| Country of Origin | Imported |
Anonymous
Mar 28, 2026
Rating: 5/5
Perfect for my shed roof
These screws drilled through the corrugated sheets effortlessly. No pre-drilling needed and the countersunk head sits flush.
Anonymous
Mar 21, 2026
Rating: 5/5
Easy installation
Saved so much time on pre-drilling. The twin-tail design really helps with alignment on curved sheets.
Anonymous
Mar 16, 2026
Rating: 5/5
High quality steel
I used these near the coast and haven't seen any rust after 6 months. The 316 grade is definitely worth it for outdoor projects.
Anonymous
Feb 18, 2026
Rating: 5/5
Bulk order satisfied
Ordered multiple boxes for a commercial job. Consistent quality across the batch and delivery was prompt.
Anonymous
Feb 09, 2026
Rating: 4/5
Good value
Works well overall. Just be careful not to apply too much torque or the head might strip slightly. Good product for the price.
Q: Are sealing washers included with these screws?
A: No, this listing is for the screws only. Sealing washers are sold separately if needed for waterproofing.
Q: What thickness steel can this drill through?
A: These screws are designed to drill through carbon steel up to 3mm thick without pre-drilling.
Q: What is the difference between 304 and 316 options?
A: 316 Stainless Steel offers superior corrosion resistance, especially against chlorides and saltwater, compared to 304.
Q: Can I use these on aluminum sheets?
A: Yes, they can be used on aluminum, but please ensure proper spacing to avoid galvanic corrosion issues.
Q: What driver bit do I need for these?
A: A standard Phillips #2 driver bit is recommended for best engagement and torque transfer.
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