Metal Roofing Stitch Screws #14 x 7/8 in - Durable Self-Drill Pack

In this review of the Fasteners Plus ST Fastening #14 x 7/8 in Maxx Steelbinder screws, the bottom line is simple: these are a practical choice for contractors and DIYers fastening metal-to-metal panels where a coated, sealed fastener is needed. The reviewer finds the screws effective for attaching roof and sidewall panels on pre-engineered metal buildings because of their self drilling tip and deep penetration, plus a robust powder coat and EPDM washer that provide a reliable seal and long-term finish retention.

Key Features

• Self drilling: The drill point is designed to penetrate steel up to 0.210 in thick so panels can be fastened without pre-drilling.
• Powder coated finish: A 2.5 mil powder coating with UV inhibitor helps prevent chalking and fading on exposed panels.
• EPDM rubber washer: The cupped head with EPDM washer encapsulates the hole for a secure weather seal even when the screw is driven at an angle.
• Deep penetration: The fastener's geometry reduces point walking and makes consistent penetration through thin gauge roof and wall panels more likely.
• Color match options: Collar options allow the fastener to blend with common metal panel paint colors for a neater finish.

Who It's For

These screws suit builders, metal roof installers, and property owners working on pole barns, agricultural buildings, and other pre-engineered metal structures who need a reliable metal-to-metal fastener with integrated sealing. The pack size of 250 makes them useful for medium-sized jobs and stock on the truck.

Those who need extremely precise drill performance for very thick structural steel or a stainless steel fastener for corrosive coastal environments should look elsewhere; this product is formulated for coated steel roof and wall panels rather than heavy structural steel or specialized corrosion resistance.

Pros & Cons

Pros

• Strong self drilling point and deep penetration suitable for up to 0.210 in steel without pre-drilling.
• Durable 2.5 mil powder coating with UV inhibitor helps the finish resist chalking and fading.
• Cupped head with EPDM rubber washer provides a reliable weather seal even when driven at a slight angle.
• Collar color options help match common metal panel paints for a cleaner appearance.

Cons

• Some customers reported mixed drill accuracy, with a small percentage of screws that will not drill properly on first try.
• Not specified as stainless or specialized for extreme coastal corrosion, so choice is limited to coated steel applications.

Specifications

Product type	Metal-to-metal self drilling stitch screws
Size	#14 x 7/8 in
Pack quantity	250
Coating	2.5 mil powder coat with UV inhibitor
Washer	EPDM rubber cupped head washer
Drilling capacity	Up to 0.210 in steel thickness

Our Verdict

These #14 x 7/8 in Maxx Steelbinder screws are a solid choice for roofing and sidewall panel work on pre-engineered metal buildings, delivering a good balance of self drilling performance, sealed heads, and durable coated finish at a reasonable per-screw cost. They represent good value for contractors and homeowners doing typical metal panel installs, provided occasional drill failures are acceptable and stainless is not required.

Frequently Asked Questions

Can these screws drill through thick metal?
They are rated to penetrate steel up to 0.210 in thick, intended for metal-to-metal panel fastening rather than heavy structural members.

Do the washers provide a weather seal?
Yes, the cupped head with EPDM rubber washer encapsulates the hole and helps maintain a secure weather seal even if the screw is driven at a slight angle.

Will the finish fade over time?
The 2.5 mil powder coating includes a UV inhibitor to resist chalking and fading, improving long-term appearance on exposed panels.