Fasteners Plus ST Fastening Kwikseal Woodbinder #10 x 2-1/2 in - Metal

Our review of the Fasteners Plus ST Fastening Kwikseal Woodbinder screws finds them best suited for contractors and DIYers installing metal roofing or siding on wood substrates who need a reliable, weather-resistant fastener. The single biggest reason to buy is the integrated EPDM rubber washer vulcanized to a steel backing, which provides a durable seal that holds up even when screws are driven at an angle. The review focuses on real-world handling, sealing performance, and the coating durability that matters for exposed exterior panels.

Key Features

• Coated screws: The 2.5 mils of computer-controlled powder coating resists chalking and fading thanks to a UV inhibitor, so visible fasteners stay closer to original color over time.
• KS V-neck head design: A hex washer head with V-neck reinforcement reduces the risk of head twist-off under high torque, important when using impact drivers.
• EPDM rubber washer: Vulcanized EPDM to a G-90 steel washer provides a reliable weather seal and helps prevent leaks even when fasteners are not driven perfectly perpendicular.
• KS lo-root thread: The thread geometry transitions from fine to coarse and gives improved pullout strength in wood compared with traditional thread forms.
• Micro-bit point: The self-drilling point consistently penetrates metal panels so you can install without pre-punching holes, saving time on long runs.

Who It's For

These screws are aimed at builders, roofers, and homeowners working with steel roofing and siding on post-frame and residential projects where metal must be fastened to wood. The combination of a sealed washer and a durable powder coating makes them a good choice when exposure to weather and UV is a concern.

Those who need specialized stainless fasteners for corrosive coastal environments, or a different head style for decorative woodwork, should consider other fastener lines designed for those specific conditions. For standard metal-to-wood roofing and siding work, these are a practical option.

Pros & Cons

Pros

• Durable powder coating that resists fading and chalking, preserving appearance over time.
• Vulcanized EPDM washer bonded to steel offers strong sealing performance even when driven at an angle.
• V-neck HWH reduces head failure under torque and the micro-bit point eliminates the need to punch holes first.
• Lo-root thread provides better pullout strength in wood than many standard screws.

Cons

• Not specified as stainless, so users in extremely corrosive coastal environments may prefer a stainless fastener option.

Specifications

Brand	ST Fastening
Count	250
Size	#10 x 2-1/2 in
Head	Hex washer head (HWH) with V-neck design
Coating	2.5 mils powder coating with UV inhibitor
Washer	EPDM rubber vulcanized to G-90 steel washer
Point/Thread	Micro-bit point with KS lo-root thread

Our Verdict

For typical residential and post-frame metal roofing or siding attached to wood, these Kwikseal Woodbinder screws are a practical, cost-effective choice. They combine a weather-tight vulcanized washer, a robust powder coating, and a design that resists head failure and improves pullout strength, making them a sensible buy for contractors and serious DIYers seeking reliable, long-lasting fasteners.

Frequently Asked Questions

Are these screws suitable for metal-to-wood roofing?
Yes. They are specifically designed for metal roofing and siding attached to wood and include a sealing washer for weather resistance.

Do the washers seal if screws are driven at an angle?
Yes. The EPDM rubber is vulcanized to a steel backing and is designed to maintain a seal even when fasteners are driven at an angle.

Will the coating fade quickly?
The screws use 2.5 mils of powder coating with a UV inhibitor to reduce chalking and fading for better long-term appearance.