ST Fastening Maxx SteelBinder #14 x 7/8ft Polar White Stitch Screws

In this review the ST Fastening Maxx SteelBinder #14 x 7/8' Polar White stitch screws are assessed for contractors and DIYers who install metal roofing and siding panels. The bottom line: these self-drilling screws are built for long-term performance on pole barns and pre-engineered metal buildings, with a robust powder coating and EPDM washer that deliver reliable sealing and corrosion resistance, making them a strong choice when longevity and panel aesthetics matter.

Key Features

• Hybrid self-drilling point: The combination 2- and 3-point design helps the screw penetrate multilayer metal without wandering, reducing time spent aligning fasteners on lap seams.
• MAXX self drill head: The cupped HWH head seals at any driving angle to maintain a positive seal while protecting the EPDM washer from direct UV exposure.
• Installation type: #14 carbon steel stitch screws are designed specifically to attach metal roof and sidewall panels in pre-engineered metal building applications for consistent fit.
• EPDM washer retention: The head and washer face capture the EPDM washer even when driven at an angle, which helps maximize pull-over strength and long-term sealing.
• Powderful corrosion defense: A 2.5 mils powder coating with UV inhibitors resists chalking and fading so the screws continue to match panels and protect structures for years.

Who It's For

These screws are best for contractors, builders, and serious DIYers who install metal roof and sidewall panels on pole barns and pre-engineered metal buildings and need reliable sealing and long-term color retention. The product is also suitable for jobs that require fastening panel sidelaps up to 18 ga. thickness using a 1/4' stitch.

Those who should look elsewhere include installers who need specialty lengths or non-carbon steel alloys for extreme environments; the screws are carbon steel with a powder coat finish, so projects requiring stainless steel fasteners or custom head styles may require a different product.

Pros & Cons

Pros

• Durable powder coating with UV inhibitors helps maintain finish and reduces visible fading over time.
• Self-drilling hybrid point and MAXX head combine for faster, cleaner penetration and strong pull-over strength.
• EPDM washer design stays captured under the head to preserve the seal even when driven at an angle.
• Designed specifically for panel sidelaps up to 18 ga., so strip-out is unlikely when installed correctly.

Cons

• Some users report mixed drill accuracy; a small percentage may not drill properly, so spot-checking screw performance on your panels is wise.
• Carbon steel core may not be ideal for every corrosive environment compared with stainless alternatives.

Specifications

Brand	ST Fastening
Model	Maxx SteelBinder stitch screw
Size	#14 x 7/8' (stitch)
Coating	2.5 mils powderful coating with UV inhibitors
Washer	EPDM rubber washer captured by head
Point type	Hybrid 2- and 3-point self-drilling
Pack count	250 count

Our Verdict

The Maxx SteelBinder #14 x 7/8' stitch screws are a practical, value-oriented choice for metal building installers who need dependable sealing and long-lasting finish retention. With a robust powder coating and EPDM washer design they hold up well on typical pole barn and pre-engineered panel work, though installers should confirm drill performance on their panel gauge before large runs.

Frequently Asked Questions

Can these screws be used on 26 ga. panels?
Yes; customers report they work well on 26 ga. panels and the hybrid point helps penetrate thinner gauges cleanly.

Do the screws resist fading?
The 2.5 mils powderful coating contains UV inhibitors to reduce chalking and fading and maintain color match over time.

Will the EPDM washer seal if driven at an angle?
Yes; the head and washer face capture the EPDM washer to maintain a positive seal even when screws are installed at an angle.