A
Anonymous
Apr 17, 2026
Rating: 5/5
Perfect seal against rain
No leaks so far after heavy storms. The EPDM washer bonds well to the metal surface.
Description
410 Grade Stainless Steel Self-Drilling Tek Screws for Color Steel Roofing - M5.5 with Washer, Free Shipping
Reviews
Attributes
| Brand | - |
| Category | Industrial Small Parts / Connectors and Fasteners |
| Origin | - |
| Material | 410 Stainless Steel |
| Standard | GB Standard |
| Thread Size | M5.5 |
| Head Style | Swallowtail Hex Head |
| Drive Type | Hex Socket |
| Surface Finish | Zinc Plated |
| Washer Type | EPDM Bonded Washer |
| Point Type | Self-Drilling (Type 3) |
| Application | Corrugated Steel Roofing |
| Package Quantity | 500 Pieces per Box |
5 reviews
A
Anonymous
Mar 26, 2026
Rating: 5/5
Fast shipping and good product
Arrived earlier than expected. Product matches the description perfectly. Will buy again.
A
Anonymous
Mar 19, 2026
Rating: 4/5
Good quality fasteners
Screws are sharp and strong. Only giving 4 stars because the packaging was slightly damaged upon arrival, but the screws were fine.
A
Anonymous
Mar 16, 2026
Rating: 5/5
Great for roofing projects
Used these on my shed roof and they drilled through the steel sheets effortlessly. The washer creates a tight seal.
A
Anonymous
Feb 18, 2026
Rating: 3/5
Decent but check your batch
Most screws were great, but I found a few with minor surface imperfections. Usable but not perfect.
5 FAQ
Q: What is the maximum steel thickness these can drill through?
A: These screws are designed to penetrate up to 3mm of steel sheeting effectively.
Q: Is the washer UV resistant?
A: Yes, the EPDM bonded washer is designed to withstand UV exposure and weathering.
Q: What size hex driver bit is required for installation?
A: You will need a standard 8mm hex driver bit to install these M5.5 screws.
Q: Are these suitable for coastal environments?
A: 410 Stainless Steel offers good resistance, but for high-salt coastal areas, 304 or 316 grade is recommended.
Q: Do you offer bulk discounts for larger orders?
A: Yes, please contact our sales team directly for pricing on orders over 10 boxes.
![[M2-M20] Stainless Steel Spring Washer](https://www.gosteppe.com/cache/medium/product/16306/legacy-main-ef3d2dba3bde669d48e6cca2.webp)
![[Pre-order Deposit Neo Eden Toys] Mengji Sweetheart Series Action Figure Blind Box](https://www.gosteppe.com/cache/small/product/269878/legacy-main-2c0235d7a3357d5860e527cd.webp)
