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Home / Connectors and Fasteners / 410 Grade Stainless Steel Self-Drilling Tek Screws for Color Steel Roofing - M5.5 with Washer, Free Shipping
Connectors and Fasteners

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

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.

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.

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