The Simpson Cable Tie Strap Holder with 1 in x 0.125 in Pin is a preassembled fastener designed to secure zip ties directly to concrete in mechanical, electrical, and plumbing installations. The factory-attached zip-tie holder and smooth-shank pin arrive ready to drive, eliminating on-site assembly and supporting fast, consistent performance across high-volume MEP projects. Compatible with both gas-actuated concrete nailer tools and powder-actuated tools, this carbon steel holder with a zinc finish handles a range of substrates - from standard concrete to structural steel and extra-hard concrete.

Key Features

• Preassembled design - the zip-tie holder arrives factory-attached to the smooth-shank pin, so installers can drive and move on without stopping to assemble components on the jobsite.
• Dual tool compatibility - works with gas-actuated concrete nailer tools for standard concrete and powder-actuated tools for harder substrates like structural steel and extra-hard concrete, giving crews flexibility across different site conditions.
• Smooth-shank pin geometry - engineered for clean, consistent penetration into concrete surfaces, supporting repeatable results throughout high-volume MEP fastening runs.
• Carbon steel construction with zinc finish - delivers the strength needed for demanding fastening applications while the zinc finish provides a layer of corrosion resistance suited to typical MEP environments.
• Purpose-built for MEP applications - specifically designed to anchor zip ties to concrete, keeping mechanical, electrical, and plumbing lines organized and securely routed in the field.

Why This Product

• No assembly, no delay - because the holder and pin come preassembled from the factory, crews can install immediately without handling loose parts, which directly reduces labor time on large MEP jobs.
• One fastener for multiple substrates - the ability to use this holder with gas-actuated tools on standard concrete and powder-actuated tools on structural steel or extra-hard concrete means fewer specialized components to source and manage on site.
• Engineered by a trusted structural fastener brand - Simpson brings focused engineering to this MEP fastener, making it a reliable choice for contractors who need consistent performance across repetitive installations.
• Optimized for high-volume work - the preassembled, drive-and-go format is specifically suited to MEP installations where speed and repeatability across dozens or hundreds of anchor points directly affect project efficiency.

Specifications

• Manufacturer: Simpson Strong-Tie
• Model Number (MPN): GCT-R50
• Material: Carbon Steel
• Finish: Zinc
• Pin Length: 1"
• Pin Diameter: .125"
• Head Diameter: .300"
• Shank Type: Smooth
• Quantity: 50 per pack

Approved Applications

• Securing zip ties to concrete surfaces in mechanical, electrical, and plumbing (MEP) installations
• High-volume MEP fastening applications
• Fastening into standard concrete using gas-actuated concrete nailer tools
• Fastening into harder substrates, including structural steel and extra-hard concrete, using powder-actuated tools

What's Included

• 50 x Simpson Strong-Tie GCT Preassembled Cable Tie Strap Holders with 1" x .125" smooth-shank pins (zinc finish)

Note: Product dimensions and/or thread length may differ from picture. Please see the item description above for specifications.

Frequently Asked Questions

What tools are compatible with the GCT Cable Tie Strap Holder?

The GCT-R50 is compatible with gas-actuated concrete nailer tools for standard concrete applications, as well as powder-actuated tools for use in harder substrates such as structural steel and extra-hard concrete.

Does the zip-tie holder come preassembled, or does it require assembly on the jobsite?

The zip-tie holder comes factory-attached to the smooth-shank pin, so no assembly is required on the jobsite. This preassembled design supports faster, more consistent installation during high-volume MEP projects.

What are the material and finish of the GCT-R50?

The GCT Cable Tie Strap Holder is constructed from carbon steel with a zinc finish, which provides corrosion resistance in standard installation environments.

What is the pin size and how many fasteners are included per pack?

The GCT-R50 features a 1" smooth-shank pin and is sold in a 50-pack, making it well suited for large-scale MEP installations where quantity and efficiency are important.