Fasteners Plus ST Fastening #12 x 3/4ft Kwikseal Woodbinder Stitch

In this review of the Fasteners Plus ST Fastening #12 x 3/4' Kwikseal Woodbinder stitch screws, the bottom line is simple: these screws are for installers who need a reliable metal-to-wood fastener that seals as it secures. The reviewer found the combination of a vulcanized EPDM washer and a computer-controlled powder coat keeps joints watertight and resists UV fade, while the micro-bit point and KS lo-root thread make panel penetration and pullout strength noticeably better than generic roofing screws.

Key Features

• Coated Screws: The 2.5 mils of powder coating with UV inhibitor provides long-lasting color stability and helps resist corrosion on exposed roof panels.
• KS V-Neck Head Design: The hex washer head with V-neck shape adds torque strength to reduce the chance of head twist-off during high-torque driving.
• EPDM Rubber Washer: A vulcanized EPDM washer bonded to a G-90 steel backing gives a secure, flexible seal that prevents leaks even when screws are driven at an angle.
• KS Lo-Root Thread Design: The thread transitions from fine to coarse to deliver improved pullout strength compared with traditional or Hi-Lo threads.
• Micro-Bit Point Design: The micro-bit point consistently pierces metal panels, eliminating the need to pre-punch holes and speeding installation.

Who It's For

These stitch screws suit professional roofers, siding installers, and experienced DIYers working with metal panels over wood substrates who want a packaged fastener that balances sealing and structural performance. The product is particularly helpful for installations where maintaining a weathertight seal is as important as mechanical holding power.

Those who should look elsewhere include projects that require stainless steel fasteners for extreme coastal corrosion resistance or applications needing longer lengths than 3/4 in. For structural timber or heavy framing connections, a longer or thicker fastener would be more appropriate.

Pros & Cons

Pros

• Reliable sealing from the vulcanized EPDM washer reduces the risk of leaks at each fastener point.
• Durable powder coating with UV inhibitor maintains finish and helps prevent chalking or fading.
• Micro-bit point and lo-root thread speed installation and improve pullout resistance compared with standard roofing screws.
• V-neck hex washer head improves torque strength and reduces head failure during driven installs.

Cons

• Not stainless steel, so options for severe salt-air environments may be limited.
• Length is fixed at 3/4 in, which may be too short for thicker substrates or thicker panel assemblies.

Specifications

Brand	ST Fastening
Part Type	Kwikseal Woodbinder metal-to-wood stitch screw
Size	#12 x 3/4 in
Pack Quantity	250
Washer	Vulcanized EPDM on G-90 steel backing
Coating	2.5 mils powder coat with UV inhibitor
Point and Thread	Micro-bit point with KS lo-root thread design

Our Verdict

These Kwikseal Woodbinder stitch screws are a practical choice for metal-to-wood roofing and siding work where a watertight seal and driving reliability matter. They deliver good value through coating durability, a bonded EPDM washer that prevents leaks, and a point/thread design that eases installation; professionals and savvy DIYers will appreciate the combination, while those needing stainless fasteners or longer lengths should consider alternatives.

Frequently Asked Questions

Are these screws suitable for metal roofing to wood purlins?
Yes, the micro-bit point and lo-root thread are designed to penetrate metal panels and hold in wood substrates, and the EPDM washer provides a weather seal.

Will the powder coat color fade quickly in sun exposure?
The screws have 2.5 mils of computer-controlled powder coating with a UV inhibitor, which resists chalking and fading under normal exposure.

Can these be used near the coast?
They offer coated protection but are not specified as stainless steel; for severe salt-air conditions, a stainless fastener is recommended.