75-Piece #9 2.5-in. Black Torx Low Profile...

Updated August 29, 2026

Lot number	251
Auction	Ironwood Auction Company's Welcome to Hickory Auction
Date	September 9, 2026 at 9:00 PM EDT
Auction house	Ironwood Auction And Holdings Company
Location	Hickory, North Carolina

Collated Cortex for Trex Composite Deck Screw 0.91 lbs. Rocky Harbor. Condition: New In Packaging?: Yes Assembly Required?: No Damaged?: No Functional?: Yes Missing Parts?: No The FastenMaster Collated Cortex Hidden Fastening System is the fastest, easiest way to hide fasteners in composite, cap stock, and PVC decking boards. Cortex offers a strong connection between the deck board and joist. It hides fasteners across the entire deck, first and last board, perimeter and stairs. Cortex plugs are made with the same material as leading deck boards, meaning you can achieve a perfect seamless finish across your whole deck. Featuring a TORX ttap drive system and a high-strength setting tool - Cortex screws are easy to install and optimized for use by the PRO contractor. Cortex plugs come pre-aligned on collated strips, enabling you to install Cortex 50% faster. To install, simply drive the Cortex fastener using the included setting tool - this will countersink the screw to the perfect depth. Then, place your Cortex plugs on top of the fastener holes with the grains aligned, and tap to finish. Designed to fasten 50 lineal feet of Trex Rocky Harbor Decking. Includes 75, 2-1/2 in. carbon steel Cortex decking screws, 80 Cortex plugs on collated strips, and 1 Cortex setting tool. Cortex is trusted by PROs everywhere who are dedicated to craftsmanship and quality. Drive Style: Torx. Fastener Color: Black. Fastener Material: Carbon Steel. Fastener Plating: Black Oxide Zinc. Fastener Type: Composite Deck Screws. Features: No Additional Features. Grade: Not Graded. Head Style: Low Profile Head. Included: No Additional Items Included. Interior/Exterior: Exterior,Interior. Measurement Standard: ASTM. Measurement System: Inches. Package Quantity: 75. Product Weight (lb.): 0.91 lb. Screw Head Color: Black. Thread Pitch (mm): 0.3 mm. Thread Style: Coarse Thread. Threads Per Inch (TPI): 12 TPI. Screw Length: 2-1/2 in. Size: #9. Screw Length: 2-1/2 in. Head Style: Low Profile Head. Fastener Material: Carbon Steel. Size: #9. Fastener Type: Composite Deck Screws. Drive Style: Torx. Thread Style: Coarse Thread.

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