ST Fastening Maxx SteelBinder #12 x 1-1/2 in Tan Screws - Roofing

In this review of the ST Fastening Maxx SteelBinder screws, the bottom line is simple: these fasteners are aimed at builders and DIYers who need reliable metal-to-metal attachment for roofing and siding panels, with longevity and consistent sealing as the main selling points. The reviewer found the hybrid self-drilling point and cupped head design to deliver dependable penetration and a strong seal across typical panel thicknesses, and the powderful coating with UV inhibitors to be the standout reason to choose these screws for long-term exterior use.

Key Features

• Hybrid self-drilling point: The combination 2- and 3-point design reduces point walking and makes starting and penetrating multilayer steel much easier while maintaining alignment.
• Maxx self drill cupped head: The 5/16 cupped head seals at any angle, promoting a positive seal and protecting the washer from direct UV exposure for longer life.
• #12 carbon steel construction: Sized for attaching metal roof and sidewall panels in pre-engineered metal building applications, providing the strength needed for structural connections.
• EPDM washer retention: The head and washer face are designed to capture the EPDM washer even when driven at an angle, maximizing pull-over strength and sealing performance.
• Powderful corrosion defense: The 2.5 mils of powder coating with UV inhibitors resists chalking and fading, helping the fasteners maintain appearance and protection for years.

Who It's For

These screws are best for contractors, metal building erectors, and serious DIYers working on pole barns, agricultural buildings, and pre-engineered metal structures who need a durable fastener that both drills through steel and seals reliably. The product's focus on washer protection and powder coating makes it a smart choice where long-term weather resistance and matching panel finish matter.

Homeowners or hobbyists doing small interior projects, or anyone needing extremely tight drill tolerances for thin decorative sheet metal, may prefer a different fastener if they are sensitive to the reported small percentage of drill failures. For most exterior metal roofing and siding jobs these screws remain a practical option.

Pros & Cons

Pros

• Strong sealing performance from the cupped head and captured EPDM washer, even when driven at an angle.
• Reliable penetration through typical panel stacks thanks to the hybrid self-drilling point.
• Durable finish from the powderful coating with UV inhibitors that resists fading and chalking.
• Appropriate strength and size for standard metal roof and sidewall attachment.

Cons

• Some users report a minority of screws that do not drill properly, so random drill accuracy issues can occur.

Specifications

Brand	ST Fastening
Part count	250 per pack
Size	#12 x 1-1/2 in
Head type	5/16 in cupped hex washer head
Material	Carbon steel, self-drilling point
Coating	2.5 mils powderful coating with UV inhibitors
Washer	EPDM rubber washer retained by head design

Our Verdict

The ST Fastening Maxx SteelBinder screws are a solid choice for roofers and metal building installers who prioritize long-term sealing and finish durability. With a hybrid self-drilling point, EPDM washer retention, and a robust powder coating, they offer good value for exterior metal panel work, provided you accept that a small percentage may show drill accuracy variation.

Frequently Asked Questions

Will these screws drill through 26 gauge panels?
Yes, reviewers report they work well on 26 gauge panels; the hybrid point is designed for multilayer penetration typical in pole barn work.

Do the washers hold up to sun exposure?
The EPDM washer is protected by the cupped head and the powderful coating includes UV inhibitors to reduce direct UV degradation.

What finish options and longevity can be expected?
The 2.5 mils powderful coating is fade-resistant and formulated to outperform wet paint, helping the fasteners match panels for years.