Description
Reviews
| Brand | - |
| Category | Industrial Small Parts / Connectors and Fasteners |
| Origin | - |
| Material | High Carbon Steel |
| Surface Finish | Zinc Plated & Color Coated |
| Head Style | Hex Flange Head |
| Drive Style | Hex Socket |
| Point Type | Swallowtail Drill Tip |
| Thread Type | Self-Tapping Coarse |
| Diameter | 5.5 mm (No. 12) |
| Length Availability | 25 mm to 150 mm |
| Recommended Substrate | Metal Sheets up to 6 mm |
| Package Type | Recyclable Cardboard Box |
Anonymous
Mar 30, 2026
Rating: 5/5
Fast Installation
Drilled through metal panels quickly without needing pilot holes. Saved me a lot of time on the project.
Anonymous
Mar 29, 2026
Rating: 5/5
No Pre-Drilling
The swallowtail tip is very effective. I did not need to pre-drill any holes for my shed roof.
Anonymous
Mar 23, 2026
Rating: 4/5
Solid Build
Good strength and penetration. One screw had a slightly scratched coating but overall good value.
Anonymous
Mar 08, 2026
Rating: 5/5
Weather Proof
Holding up well outdoors after several rainstorms. No signs of rust so far.
Anonymous
Jan 27, 2026
Rating: 4/5
Sharp Points
Very effective tips that bite into steel easily. Just make sure to use a powerful drill.
Q: What torque setting should I use?
A: Use a clutch setting appropriate for metal screws to avoid stripping the head.
Q: Can I use these on aluminum sheets?
A: Yes, they are suitable for fastening aluminum and steel sheets.
Q: What socket size fits these screws?
A: A 5/16 inch hex socket is recommended for best torque application.
Q: Are they rust resistant?
A: The zinc plating provides standard corrosion protection for outdoor use.
Q: Do I need a separate washer?
A: No, the flange head acts as an integrated washer to distribute load.
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