Fasteners Plus ST Fastening Maxx SteelBinder #12 x 3 Screws - Durable

In this review of the Fasteners Plus ST Fastening Maxx SteelBinder screws, the bottom line is simple: these are engineered fasteners for contractors and DIYers who need reliable metal-to-metal attachment with long-term finish and sealing performance. The review finds the biggest reason to buy is the combination of a hybrid self-drilling point and a cupped head with EPDM washer, which together make installation into multilayer metal panels fast while providing a positive weather seal that resists fade and UV damage.

Key Features

• Hybrid self-drilling point: The combination 2- and 3-point design lets the screw penetrate multilayer steel without walking, reducing setup time and broken bits.
• Maxx self drill and cupped head: The 5/16 cupped hex washer head seals at any angle to protect the EPDM washer and maintain pull-over strength on metal panels.
• #12 carbon steel construction: Sized for metal roof and sidewall panels, these fasteners are designed specifically for pre-engineered metal building applications.
• EPDM washer retention: The head and washer face capture the EPDM washer even when driven at an angle to preserve the seal and reduce leaks.
• Fade-resistant Powderful coating: A 2.5 mils powder coat with UV inhibitors resists chalking and preserves finish match with panels for years.

Who It's For

These screws are best for professional builders, roofers, and property owners working on pole barns, metal agricultural buildings, and pre-engineered metal structures who need a durable metal-to-metal fastener that seals and resists corrosion. The hybrid drilling point and cupped head suit projects using 26 gauge up to moderate thickness steel where fast, consistent penetration and a lasting finish are important.

Those who should look elsewhere include installers who require ultra-fine drill accuracy for very thin or specialty metals, since some users reported a small percentage of screws that did not self-drill perfectly. Also, if stainless steel fasteners are required for extreme corrosion environments, a different material choice would be prudent.

Pros & Cons

Pros

• Strong sealing performance from the cupped HWH and EPDM washer for weather resistance.
• Consistent finish retention due to the 2.5 mils Powderful coating with UV inhibitors.
• Hybrid self-drilling point speeds installation and reduces point walking on multilayer steel.
• Designed specifically for metal roof and sidewall panel attachment in pre-engineered buildings.

Cons

• Some users report mixed drill accuracy, with a minority of screws failing to self-drill properly, so pre-testing is advisable.
• Carbon steel construction may not suit applications requiring stainless fasteners for extreme corrosion resistance.

Specifications

Brand	ST Fastening (Fasteners Plus listing)
Quantity	250 count
Size	#12 x 3 in
Head	5/16 cupped hex washer head
Point	Hybrid 2- and 3-point self-drilling
Washer	EPDM rubber washer retained in head
Finish	2.5 mils powderful coated with UV inhibitors

Our Verdict

The SteelBinder #12 x 3 screws are a practical choice for attaching metal roof and sidewall panels where a strong seal, reliable finish, and faster installation matter. For contractors and owners of pole barns or pre-engineered buildings they represent good value, though installers should test a small batch for drill performance before committing to a full run.

Frequently Asked Questions

Are these screws suitable for 26 gauge panels?
Yes; customers report they perform well on 26 gauge panels, but testing is recommended for your specific stack-up.

Do the EPDM washers stay in place when driven at an angle?
The head and washer face are designed to capture the EPDM washer even when driven at an angle to maintain the seal.

How durable is the coating?
The 2.5 mils Powderful coating includes UV inhibitors to resist chalking and fading and is engineered to retain finish match for years.