Hex Head Sleeve Anchor by Hillman 5/16″ x 2-1/2″ Zinc-Plated, 35-Pack

Description

Product Overview

The Hillman 370826 Hex Head Sleeve Anchor is engineered from high‑grade alloy steel and finished with a zinc plating that resists corrosion while maintaining structural integrity. Measuring 5/16″ in diameter and 2-1/2″ in length, each anchor features a hex head for easy torque application and an integrated washer that distributes load across the mounting surface. The design follows industry‑standard expansion principles, allowing the anchor to grip firmly within drilled holes in concrete, masonry, or stone substrates.

Construction professionals appreciate the consistent performance of these anchors, which meet Grade 2 specifications for tensile strength and shear resistance. The zinc‑plated finish not only protects against moisture and mild chemicals but also reduces the likelihood of rust staining on surrounding materials. With a pack of 35 units, the product offers both bulk value and the convenience of having enough fasteners for multiple projects or large‑scale installations.

Installation is straightforward: after drilling a correctly sized pilot hole, the anchor is inserted and the hex head is tightened, causing the sleeve to expand and lock securely in place. This expansion creates a mechanical interlock that distributes forces evenly, minimizing the risk of material cracking or anchor pull‑out under load. The built‑in washer further enhances stability by preventing the head from embedding into the surface.

Designed for versatility, the 5/16″ x 2-1/2″ size is a common choice for a wide range of applications, from securing door frames and window casings to mounting shelving units, electrical boxes, and heavy equipment brackets. The product’s compatibility with standard hex wrenches and impact drivers makes it a go‑to solution for contractors, electricians, and DIY enthusiasts alike.

Hillman, a trusted brand in fasteners, backs this sleeve anchor with a warranty that underscores confidence in material quality and manufacturing precision. The product’s UPC (008236561548) and GTIN (00008236561548) ensure traceability and ease of inventory management for retailers and distributors.

Overall, the Hillman 370826 delivers a balance of durability, ease of use, and cost‑effectiveness, making it an essential component in any toolkit that requires reliable anchoring in solid substrates.

Usage

These sleeve anchors excel in concrete and masonry environments where a strong, permanent connection is required. Typical use cases include anchoring door and window frames, attaching heavy‑duty shelving to garage walls, and securing light fixtures or HVAC equipment to structural elements.

When installing, it is important to select a drill bit that matches the anchor’s diameter to achieve the proper expansion pressure. Pre‑drilling ensures a clean, straight hole that reduces the chance of misalignment and maximizes the anchor’s holding power. After placement, tightening the hex head to the recommended torque creates the expansion action that locks the sleeve in place.

For outdoor applications, the zinc plating provides moderate corrosion protection, making these anchors suitable for exterior wall installations, patio structures, and garden sheds. However, for highly corrosive environments, additional protective coatings or stainless‑steel alternatives may be considered.

Contractors often use these anchors in batch installations, such as installing multiple brackets for a commercial shelving system. The 35‑piece pack reduces the need for frequent reordering, streamlining project timelines and minimizing downtime.

Because the anchor includes an integrated washer, it eliminates the need for separate washers, simplifying the installation process and ensuring consistent load distribution across the mounting surface.

Why Choose Us

Hillman’s reputation for quality fasteners is built on decades of engineering expertise and rigorous testing. Each sleeve anchor undergoes dimensional inspection and tensile testing to verify compliance with industry standards, guaranteeing that the product performs as advertised.

The zinc‑plated alloy steel construction offers a blend of strength and corrosion resistance that many competing products lack. This finish protects the anchor from moisture and mild chemicals, extending its service life even in challenging environments.

Our packaging of 35 anchors per box is designed for both professional and DIY users, providing enough units for medium‑sized projects while keeping inventory manageable. The clear labeling of size, material, and quantity helps users quickly identify the correct product, reducing errors on the job site.

Customer support is backed by a responsive service team that can assist with technical questions, installation guidance, and warranty claims. Hillman’s commitment to after‑sales service ensures that users receive the assistance they need throughout the product’s lifecycle.

Finally, the product’s competitive pricing, combined with its high performance, delivers excellent value for money, making it a cost‑effective choice for contractors seeking reliable anchoring solutions without compromising on quality.

Key Features

• Robust alloy steel construction with zinc plating for long‑lasting corrosion resistance.
• Hex head design with integrated washer simplifies installation and ensures even load distribution.
• 5/16″ x 2-1/2″ size provides strong holding power for a wide range of concrete and masonry applications.
• Pack of 35 anchors offers bulk value and reduces the need for frequent reordering on large projects.
• Hillman’s dedicated customer support and warranty provide peace of mind and reliable after‑sales service.

FAQ

What type of material can these sleeve anchors be used with?

These anchors are designed for solid substrates such as poured concrete, concrete block, brick, and stone. They are not recommended for use in soft or hollow materials without additional reinforcement.

Do I need a special tool to install the hex head sleeve anchor?

No special tool is required. A standard hex wrench or impact driver that fits the 5/16″ hex head will allow you to tighten the anchor to the proper torque, causing the sleeve to expand and lock securely.

How do I determine the correct drill bit size for installation?

The drill bit should match the anchor’s outer diameter, typically indicated in the product specifications. Using the correct size ensures optimal expansion pressure and maximizes holding strength.

Is the zinc plating sufficient for outdoor or marine environments?

The zinc plating provides moderate corrosion protection suitable for most outdoor applications. For highly corrosive or marine environments, consider using stainless‑steel anchors or applying an additional protective coating.

What warranty does Hillman offer on these sleeve anchors?

Hillman provides a standard warranty that covers material defects and manufacturing errors. For detailed warranty terms, refer to the product packaging or contact Hillman customer service.