ST Fastening Maxx SteelBinder #12 x 1 Burnished Slate Screws - Roofing

In this review the ST Fastening Maxx SteelBinder screws are assessed for contractors and DIYers needing reliable metal-to-metal fasteners for pole barns and pre-engineered metal buildings. The bottom line: these #12 self-drilling screws deliver a strong pull-over seal and long-lasting finish thanks to a 2.5 mil powderful coating and an EPDM washer that stays captured even when driven at an angle. For anyone fastening roof or sidewall panels, the main reason to buy is consistent sealing and corrosion resistance combined with a hybrid self-drilling point that speeds installation.

Key Features

• Hybrid self-drilling point: The 2- and 3-point design lets the fastener penetrate multilayer steel cleanly and reduces point walking during installation.
• Maxx self drill cupped head: The 5/16 cupped HWH seals at any angle and protects the EPDM washer by keeping it recessed from direct sun exposure.
• EPDM washer retention: The head and washer face capture the rubber washer so it remains seated and maintains pull-over strength even when fasteners are not perfectly perpendicular.
• Powderful corrosion defense: The 2.5 mil fade-resistant powder coating with UV inhibitors resists chalking and color fade so panels keep a consistent appearance for years.
• #12 carbon steel construction: Sized for metal roof and sidewall panels, these screws are intended to attach panels used in pre-engineered metal building applications.

Who It's For

These screws are best for contractors, builders, and experienced DIYers installing metal roofing and sidewall panels on pole barns or pre-engineered structures. The hybrid self-drilling point and captured EPDM washer make them suitable when speed and a reliable weather seal are priorities.

Those who should look elsewhere include users who require an exact drill performance guarantee for very thin gauge metal where a specialized point is specified, since customer feedback notes a small percentage of fasteners may not drill perfectly in every application.

Pros & Cons

Pros

• Durable powderful coating maintains color and resists corrosion for long-term value.
• Captured EPDM washer and cupped head provide a positive seal even when driven at an angle.
• Hybrid 2- and 3-point self-drill design speeds installation and reduces walking.
• Good pull-over strength for securing metal roof and sidewall panels.

Cons

• A small portion of units may have drill accuracy issues in some conditions, so sellers or buyers should expect occasional rejects during bulk installs.
• Not intended for non-metal substrates without appropriate pilot holes or anchors.

Specifications

Brand	ST Fastening
Model	Maxx SteelBinder #12 x 1
Count	250 per pack
Head	5/16 in cupped hex washer (HWH)
Point	Hybrid 2- and 3-point self-drilling
Washer	EPDM rubber, captured design
Coating	2.5 mil fade-resistant Powderful coating with UV inhibitors

Our Verdict

The ST Fastening Maxx SteelBinder screws are a practical, value-minded choice for fastening metal roof and wall panels where a durable finish and reliable sealing matter. They excel when installers need a captured EPDM washer and a self-drilling point that works through multilayer steel, though buyers should inspect for occasional drill accuracy outliers during bulk installs.

Frequently Asked Questions

Will these screws seal if driven at an angle?
The cupped HWH design and captured EPDM washer are designed to maintain a positive seal even when fasteners are driven at an angle.

What thickness of steel can the self-drilling point handle?
The hybrid 2- and 3-point self-drill is intended for typical pre-engineered metal building panels and can penetrate multilayer steel up to the thickness commonly used on pole barns; check panel specs for compatibility.

How durable is the finish?
The 2.5 mil Powderful coating with UV inhibitors resists chalking and fading and is formulated to outlast wet paint for long-term corrosion defense.