The Simpson 1/4 in. x 1 1/2 in. Zinc Nailon Pin-Drive Anchor from Simpson is a reliable, low-cost mechanical anchor engineered for light-duty fastening under static loads in concrete, grouted CMU, hollow CMU, and brick. Driven home with a single hammer strike, this pin-drive anchor expands securely within the base material for a fast, consistent installation that specifiers and contractors have long trusted in demanding masonry applications.

Key Features

• Pin-and-head tamper-resistant configuration - once installed, the anchor resists unauthorized removal, making it a practical choice for secured or high-traffic installations
• Mushroom head design - delivers a low-profile finish at the surface, reducing snag points and keeping fastened fixtures sitting flush
• Die-cast Zamac 3 alloy body with carbon-steel pin - combines a corrosion-resistant anchor shell with a tough steel drive pin for a dependable, long-lasting hold
• 1/4 in. drill bit compatibility - the anchor installs into a standard 1/4 in. pre-drilled hole, minimizing the need for specialty tooling and simplifying prep work
• Broad base material compatibility - rated for use in concrete, grouted CMU, hollow CMU, and brick, making this anchor versatile across a wide range of masonry fastening tasks
• Simple hammer-drive installation - no torque wrench or setting tool required; a single strike expands the anchor body for a secure, locked hold and keeps job-site workflow moving efficiently

Why This Product

• Trusted engineering for masonry applications - Simpson mechanical anchors are designed specifically for use in concrete, grouted and hollow CMU, and brick, giving buyers confidence the anchor will perform across the most common masonry base materials they encounter
• Cost-effective solution for light-duty static load work - the Zinc Nailon design is purpose-built to keep material costs low without sacrificing secure performance where light-duty pin anchors are the right fit
• Built-in tamper resistance at no extra step - the pin-and-head configuration automatically creates a tamper-resistant installation the moment the anchor is set, adding a layer of security that other low-cost anchor types typically do not provide
• Minimal installation time on the job site - with a straightforward hammer-drive method and compatibility with a standard 1/4 in. drill bit, this anchor cuts down on installation steps and keeps projects on schedule

Specifications

• Manufacturer: Simpson Strong-Tie
• MPN: ZN25112
• Anchor Type: Zinc Nailon Pin-Drive Anchor
• Diameter: 1/4 in.
• Length: 1-1/2 in.
• Head Type: Mushroom Head
• Material: Carbon Steel
• Finish: Die-Cast Zamac 3 Alloy / Carbon Steel
• Packaging: Packs of 100 and Cartons of 500
• Country of Origin: United States

Approved Applications

• Concrete base material
• Grouted CMU (Concrete Masonry Unit)
• Hollow CMU
• Brick
• Light-duty fastening under static loads

Frequently Asked Questions

How is the Simpson ZN25112 pin-drive anchor installed?

Installation is straightforward - insert the anchor into a pre-drilled 1/4 in. hole, then strike the head with a hammer. This drives the carbon-steel pin through the anchor body, expanding it against the base material for a secure, locked hold.

What base materials is this anchor compatible with?

The ZN25112 Zinc Nailon anchor is designed for use in concrete, grouted CMU, hollow CMU, and brick, making it versatile for a wide range of masonry fastening applications.

Is this anchor tamper resistant?

Yes. The pin and head configuration of this anchor is specifically designed to make it tamper resistant once installed, providing added security in applications where unauthorized removal is a concern.

What load type is this anchor rated for?

The Simpson ZN25112 Zinc Nailon anchor is designed for light-duty applications under static loads. It is not intended for use in overhead applications.

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