Fasteners Plus ST Fastening Maxx SteelBinder #14 x 7/8 in Stitch

In this review of the Fasteners Plus ST Fastening Maxx SteelBinder stitch screws, the verdict is pragmatic: these are built for contractors and serious DIYers who need a reliable metal-to-metal fastener for roofing and siding panels. The single biggest reason to buy is consistent sealing and pull-over strength thanks to the cupped head and captured EPDM washer, which helps maintain watertight joins on panel sidelaps. The review assesses real-world installation, coating longevity, and drill performance so you can decide if these screws fit your next metal building project.

Key Features

• Hybrid self-drilling point: The combination 2- and 3-point design makes initial penetration into multilayer metal faster and reduces wandering of the bit during start-up.
• Maxx self drill cupped head: The HWH cupped head seals at angles to preserve the EPDM washer and maintain a positive seal even when panels sit unevenly.
• #14 carbon steel construction: A thicker shank size intended for metal-to-metal attachment provides higher shear and pull-out resistance for roofing and sidewall panels.
• EPDM washer captured in head: The washer face is held so it stays in place when the screw is driven at an angle, improving long-term leak resistance.
• Powderful corrosion defense: A 2.5 mil powder coating with UV inhibitors resists chalking and fading so finished buildings keep a uniform appearance.

Who It's For

These stitch screws are best for installers of pole barns and pre-engineered metal buildings who need a fastener that handles sidelap fastening up to 18 ga. thickness without strip-out when installed correctly. Contractors working on long-lived structures will appreciate the fade-resistant coating and captured EPDM washer for weather protection.

They are less suitable for casual users who rarely work with metal panels or for situations requiring tiny, finish-head screws; also, if precise drilling every time is essential for a critical application, be aware some users report a small percentage of screws that do not start as cleanly under certain conditions.

Pros & Cons

Pros

• Strong pull-over performance from the cupped head and captured EPDM washer that improves leak resistance.
• Robust hybrid self-drilling point reduces walking and speeds installation through multiple layers.
• Durable powder coating with UV inhibitors helps the finish match panels for years and resists fading.
• Designed specifically for metal sidelaps up to 18 ga., providing a secure stitch without strip-out when used properly.

Cons

• A small portion of fasteners may exhibit inconsistent drill starts, so pre-testing is recommended before large runs.
• Heavier #14 size is not appropriate where smaller, less visible fasteners are required.

Specifications

Brand	ST Fastening
Count	250 per pack
Size	#14 x 7/8 in
Head	HWH cupped head with captured EPDM washer
Point type	Hybrid 2- and 3-point self-drilling
Coating	2.5 mil Fade-Resistant Powderful coating with UV inhibitors
Application	Metal roof and sidewall panel stitch fastening up to 18 ga.

Our Verdict

The Maxx SteelBinder #14 stitch screws are a solid choice for professionals and serious DIYers installing metal roofing and siding who need dependable sealing and long-term finish retention. They offer good value for projects where durability, captured EPDM sealing, and a robust powder coating matter, though installers should verify drill performance on their specific panel gauge before committing to large quantities.

Frequently Asked Questions

Can these screws be used on 26 ga. panels?
Yes, customers report they work on 26 ga., and the screws are designed for sidelaps up to 18 ga.; always test for screw fit and seal on your panel profile.

Will the washer stay in place if driven at an angle?
The head and washer face are designed to capture the EPDM washer so it remains seated even when installed at an angle, improving the seal.

How durable is the finish?
The 2.5 mil powder coating with UV inhibitors resists chalking and fading to help the screws match panels for decades under normal exposure.