Description
Reviews
| Brand | - |
| Category | Industrial Small Parts / Connectors and Fasteners |
| Origin | - |
| Material | Stainless Steel 410 |
| Surface Treatment | Zinc-Plated / Color-Coated |
| Head Type | Hex Head with Integrated Washer |
| Drive Type | Hexagonal (Hex) |
| Thread Type | Self-Tapping Thread |
| Point Type | Tail-Drill & Swallowtail |
| Diameter Options | 4.2mm, 4.8mm, 5.2mm |
| Length Range | 19mm to 150mm |
| Hardness | HRC 45-50 |
| Recommended Application | Roofing, Steel Structure, Cladding |
Anonymous
Mar 29, 2026
Rating: 4/5
Good quality, minor coating scratch
Mostly great screws. One box had a few with minor scratches on the coating, but functionality was not affected. Good value.
Anonymous
Feb 19, 2026
Rating: 4/5
Solid hold
Holding up well against rain so far. Zinc plating seems durable. Would buy again for future outdoor projects.
Anonymous
Feb 10, 2026
Rating: 5/5
Perfect for metal roofing
Used these for my shed roof project. They drilled through the metal sheets effortlessly without pre-drilling. The washer seals tight.
Anonymous
Feb 03, 2026
Rating: 5/5
Bulk buy was worth it
Use these daily on job sites. Consistent quality across the batch. The swallowtail type holds securely in thicker materials.
Anonymous
Jan 23, 2026
Rating: 5/5
Sharp points drill easily
No pre-drilling needed which saved me hours. The hex head grips well with my driver bit. Highly recommend for steel frames.
Q: What is the washer material made of?
A: The integrated washer is made of EPDM rubber to ensure a watertight seal.
Q: Are these screws rustproof for outdoor use?
A: They are zinc-plated and color-coated for high corrosion resistance, suitable for most outdoor roofing applications.
Q: Do you sell the 5.2mm size in bulk quantities?
A: Yes, contact us directly for bulk pricing on the 5.2mm diameter options.
Q: What bit size do I need for these screws?
A: You typically need an 8mm hex socket bit for the head drive.
Q: Can I use these on wood surfaces?
A: These are designed primarily for metal-to-metal or metal-to-wood framing. For soft wood only, standard wood screws may be better.
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