The Simpson 1/4 in. x 1-1/4 in. Zinc Nailon Pin-Drive Anchor in Type 304 Stainless Steel is a reliable, low-cost mechanical anchor from Simpson built for light-duty fastening under static loads. Designed to install quickly using only a hammer, this anchor expands within the drilled hole as the stainless-steel pin is driven through the body, locking it firmly in place across a range of common masonry base materials including concrete, grouted CMU, hollow CMU, and brick. Specifiers and contractors trust Simpson mechanical anchors for consistent, dependable performance in demanding field conditions.

Key Features

• Tamper-resistant pin and mushroom head configuration - once the pin is driven flush, the anchor resists removal or backing out, adding security to finished installations
• Mushroom head design - sits low and flush against the surface for a clean, unobtrusive finish in light-duty masonry applications
• Type 304 stainless-steel pin - provides good corrosion resistance, making this anchor a dependable choice for installations where moisture exposure is a consideration
• Hammer-drive installation with no specialty tools required - speeds up the fastening process and reduces the equipment burden on the job site
• Compatible with multiple base materials - works in concrete, grouted CMU, hollow CMU, and brick, giving contractors flexibility across common masonry substrates
• Engineered for light-duty static-load applications - right-sized performance for everyday masonry fastening tasks without over-engineering the solution

Why This Product

• A trusted name in structural fastening - Simpson mechanical anchors are relied upon by specifiers and contractors for optimum performance in demanding applications, making this pin-drive anchor a confident choice even for light-duty masonry work
• Built-in tamper resistance at no added complexity - the pin and head configuration secures the anchor against removal once installed, a practical advantage for finished or accessible installations without requiring any additional hardware
• Stainless-steel construction where it counts - the Type 304 stainless-steel pin delivers meaningful corrosion resistance, extending the service life of the fastening in environments where a plain steel anchor might fall short
• Simple, tool-free installation process - hammer-drive installation eliminates the need for specialty setting tools, keeping the workflow straightforward and efficient for masonry pin anchoring in concrete, CMU, and brick

Specifications

• MPN: ZN25114SS
• Brand: Simpson Strong-Tie
• Anchor Type: Zinc Nailon Pin-Drive Anchor
• Head Type: Mushroom Head
• Diameter: 1/4 in.
• Length: 1-1/4 in.
• Material / Finish: Type 304 Stainless Steel
• Packaging: Packs of 100 and Cartons of 500
• Country of Origin: United States

Approved Applications

• Concrete base material
• Grouted CMU (concrete masonry units)
• Hollow CMU
• Brick
• Light-duty fastening under static loads

Frequently Asked Questions

How is the Simpson ZN25114SS Zinc Nailon anchor installed?

Installation is performed by striking the mushroom head with a hammer, which drives the stainless-steel pin through the anchor body. This action expands the anchor body within the drilled hole, locking the anchor securely in the base material without requiring any specialty tools.

What base materials are compatible with this anchor?

This anchor is designed for use in a variety of base materials, including concrete, grouted CMU, hollow CMU, and brick, making it versatile for common light-duty masonry fastening tasks.

Why is this anchor considered tamper resistant?

The unique combination of the pin and mushroom head configuration makes the ZN25114SS tamper resistant. Once the pin is driven flush, the anchor cannot be easily removed or backed out, providing added security in finished installations.

What type of stainless steel is used in this anchor, and why does it matter?

The pin of this anchor is manufactured from Type 304 stainless steel, which offers good corrosion resistance compared to standard carbon steel, making it suitable for applications where moisture exposure or corrosion resistance is a consideration in light-duty static-load installations.

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