---
product_id: 41275426
title: "FASTENMASTER Cortex 2-1/2\" Fastening System for Trex Decking - 100 Linear Feet - Trex Select Pebble Grey"
brand: "fastenmaster"
price: "21645 kr"
currency: ISK
in_stock: false
reviews_count: 8
url: https://www.desertcart.is/products/41275426-fastenmaster-cortex-2-1-2-fastening-system-for-trex-decking
store_origin: IS
region: Iceland
---

# Pebble Grey color match 2.5" stainless steel screws TORX ttap drive system FASTENMASTER Cortex 2-1/2" Fastening System for Trex Decking - 100 Linear Feet - Trex Select Pebble Grey

**Brand:** fastenmaster
**Price:** 21645 kr
**Availability:** ❌ Out of Stock

## Summary

> 🔩 Elevate your deck game with invisible strength and style!

## Quick Answers

- **What is this?** FASTENMASTER Cortex 2-1/2" Fastening System for Trex Decking - 100 Linear Feet - Trex Select Pebble Grey by fastenmaster
- **How much does it cost?** 21645 kr with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.is](https://www.desertcart.is/products/41275426-fastenmaster-cortex-2-1-2-fastening-system-for-trex-decking)

## Best For

- fastenmaster enthusiasts

## Why This Product

- Trusted fastenmaster brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Built to Last:** Premium stainless steel ensures corrosion resistance and durability
- • **Heavy-Duty Strength:** Supports up to 100 lbs load capacity for reliable deck stability
- • **Perfect Color Match:** Pebble Grey fasteners blend flawlessly with Trex Select decking
- • **Effortless Installation:** TORX ttap drive system speeds up your project with precision
- • **Seamless Deck Aesthetics:** Fasteners hide invisibly for a sleek, modern finish

## Overview

The FASTENMASTER Cortex 2-1/2" Fastening System is engineered for Trex Select Pebble Grey decking, featuring corrosion-resistant stainless steel screws with a TORX ttap drive for quick, secure installation. Designed to hide fasteners for a clean, professional look, it supports up to 100 pounds load capacity and covers 100 linear feet, making it the go-to choice for durable, visually seamless decking projects.

## Description

FASTENMASTER Cortex 2-1/2" Fastening System for Trex Decking - 100 Linear Feet - Trex Select Pebble Grey

## Features

- Cortex offers a strong connection between the deck board and joist
- TORX ttap Drive System
- Fast way to hide fasteners
- Matches trex pebble grey
- Stronger Setting Tool

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Size | One Size |
| Material | Stainless Steel |
| Color | Pebble Gray |
| Brand | FASTENMASTER |
| Load Capacity | 100 Pounds |
| Fastener Material | Stainless Steel |
| Fastener Type | Screw |
| Number of Pieces | 1 |
| Product Dimensions | 1200"L x 2.75"W |
| Manufacturer | Omg Inc |
| Unit Count | 1.0 Count |
| Automotive Fit Type | Vehicle Specific Fit |
| UPC | 608309423713 |
| Item Package Dimensions L x W x H | 5.94 x 5.31 x 4.65 inches |
| Package Weight | 1.29 Kilograms |
| Item Dimensions  LxWxH | 5.94 x 5.31 x 4.65 inches |
| Item Weight | 2.8 Pounds |
| Brand Name | FASTENMASTER |
| Warranty Description | Warranty |
| Model Name | FastenMaster Cortex 2-1/2" Fastening System for Trex Decking - 100 Linear Feet - Trex Select Pebble Grey |
| Suggested Users | unisex-adult |
| Number of Items | 1 |
| Part Number | FMCTX-TX1LFSLPB |
| Included Components | FastenMaster Cortex 2-1/2" Fastening System for Trex Decking - 100 Linear Feet - Trex Select Pebble Grey |

## Product Details

- **Size:** One Size
- **Material:** Stainless Steel
- **Color:** Pebble Gray
- **Brand:** FASTENMASTER
- **Load Capacity:** 100 Pounds

## Images

![FASTENMASTER Cortex 2-1/2" Fastening System for Trex Decking - 100 Linear Feet - Trex Select Pebble Grey - Image 1](https://m.media-amazon.com/images/I/91LTwQrgvhL.jpg)
![FASTENMASTER Cortex 2-1/2" Fastening System for Trex Decking - 100 Linear Feet - Trex Select Pebble Grey - Image 2](https://m.media-amazon.com/images/I/41ucxQ7V-OL.jpg)
![FASTENMASTER Cortex 2-1/2" Fastening System for Trex Decking - 100 Linear Feet - Trex Select Pebble Grey - Image 3](https://m.media-amazon.com/images/I/61fwVBxEbvL.jpg)
![FASTENMASTER Cortex 2-1/2" Fastening System for Trex Decking - 100 Linear Feet - Trex Select Pebble Grey - Image 4](https://m.media-amazon.com/images/I/41i97EZ9sKL.jpg)
![FASTENMASTER Cortex 2-1/2" Fastening System for Trex Decking - 100 Linear Feet - Trex Select Pebble Grey - Image 5](https://m.media-amazon.com/images/I/91pt77BYzYL.jpg)

## Questions & Answers

**Q: How long are thr screws**
A: These screws are 2-3/4".

**Q: I have 2X10’s underneath with Trex on top, will i be okay screwing these down or will they penetrate past the 2X10?**
A: The 2x10s should be stood up with the 10" (9-1/2") upright.  The screws will securely fasten the trex boards and will not penetrate through the wood.  I used the grooved Trex decking and used the clamps to tie down the boards.  I only used these screws on the inner and outer pieces.  Use the bit that comes with the screw to automatically countersink the screws and use the color matched decking "dowels" to hide the screws.  I really don't think you want to use these screws for all the boards.

**Q: do these require pre-drilling?**
A: The bit countersinks the screw about 1/4" below the top of the deck board.  You can buy Trex (or presumably other) decking plugs that fit into the holes.  No pre -drilling required.

**Q: Are they stainless steel?**
A: No, these are coated carbon steel.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Outstanding product, but be careful with the installation and some suggestions on its use
*by B***R on January 5, 2020*

Purchased this to use in the installation for picture framing of a deck. Easy to install with some issues to be aware of that are not in the instructions. I used this with TimberTech Pro Terrain product containing a scalloped bottom. Company does not recommend the use of Cortex with this product, but it can be used very successfully with care. You have to place the screws into the center of the scallops to ensure that when the screw is set below the surface enough to allow room for the plug, you have enough material to hold the board to the deck. I measured carefully each screw location, and by doing that, this product worked great for installing boards where I could not use the hidden fastening system.Ensure when installing it into your deck that you have wood underneath the screw for its full length. If you only have 1 1/2" inches of wood, which is not enough, it will not set properly and either remain flush with the surface of the deck or not fully set below the surface allowing room for the plug. You either need to add additional lumber underneath the screw, or press hard directly over the screw to force it to drill deeper. Either solution is not ideal, but both solutions work. It all depends on your access to the underside of the deck.If the screw only goes part way and does not countersink to the full depth, the plug can be trimmed shorter to fit and when tapped into place will still look great.With these minor cautions, this product works great and produces a finished installed board that you can hardly tell where the screws are. The boards are solidly in place and look great. Color match of the plugs is outstanding.

### ⭐⭐⭐⭐⭐ Fastener virtually disappears!
*by J***. on December 15, 2019*

Excellent fastening system! The plugs match the decking perfectly and the location of the screws virtually disappears when applied correctly. I installed them with an impact driver which worked very well.

### ⭐⭐⭐⭐⭐ Almost invisible.
*by R***. on November 8, 2019*

This product is really great. Easy to use, durable almost invisible. Wish I had known about these earlier.

## Frequently Bought Together

- FASTENMASTER Cortex 2-1/2" Fastening System for Trex Decking - 100 Linear Feet - Trex Select Pebble Grey
- Trex Hideaway Universal Hidden Deck Fastener Clip 500 SQFT Bucket

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*Product available on Desertcart Iceland*
*Store origin: IS*
*Last updated: 2026-02-28*