The Simpson ABL9-1-OST Anchor Bolt Locator for 1-1/8" Bolt with OST Nut is a purpose-built concrete forming accessory from Simpson designed to enable the accurate and secure placement of anchor bolts on concrete-deck forms prior to concrete placement. The unit combines a structural heavy-hex electrogalvanized OST nut with a pre-formed steel chair, creating a single integrated component that simplifies anchor bolt positioning and reduces the number of loose parts needed on the job site.

Key Features

• Integrated heavy-hex OST nut and pre-formed steel chair - eliminates the need for a separate nut on the bottom of the anchor bolt, reducing components and saving time during concrete form setup.
• Electrogalvanized nut finish - pairs correctly with HDG (hot-dip galvanized) anchor bolt assemblies, ensuring finish compatibility throughout the connection and supporting corrosion resistance in demanding conditions.
• 14-gauge steel chair with G90 galvanized finish - provides a sturdy, corrosion-resistant base that holds the anchor bolt firmly in position while concrete is placed, helping to prevent costly misalignment.
• Designed for 1-1/8" diameter anchor bolts - engineered to a precise fit, so the bolt locator seats securely and maintains proper alignment without adjustment or improvisation on the form.
• Made in the United States - produced domestically, supporting consistent quality standards for structural concrete forming applications.

Why This Product

• Fewer parts, faster setup - because the OST nut is already attached to the steel chair, crews can position anchor bolts without sourcing or threading a separate bottom nut, cutting steps out of the concrete form preparation process.
• Built for HDG anchor bolt systems - the electrogalvanized nut finish is specifically matched to hot-dip galvanized anchor bolt assemblies, making this locator the correct choice for projects where finish compatibility is a code or specification requirement.
• Reliable bolt positioning before the pour - the rigid steel chair holds the anchor bolt stand at the correct height and location on the deck form, reducing the risk of bolt movement during concrete placement and helping ensure accurate post-pour alignment.
• Durable construction for job-site conditions - G90 galvanized steel on the chair and an electrogalvanized heavy-hex nut deliver corrosion resistance throughout the forming process, supporting long-term performance even in wet or exposed environments.

Specifications

• Model Number: ABL9-1-OST
• Description: Anchor Bolt Stand 1" High with 1-1/8" OST Nut
• Anchor Bolt Diameter: 1-1/8 in.
• Material - Nut: Heavy hex
• Material - Chair: 14 ga. steel
• Finish - Nut: Electrogalvanized
• Finish - Chair: G90
• Country of Origin: United States

Frequently Asked Questions

What type of anchor bolts is the ABL9-1-OST designed to be used with?

The ABL9-1-OST is specifically designed for use with HDG (hot-dip galvanized) anchor bolts. Its electrogalvanized nut finish makes it the appropriate choice when working with HDG anchor bolt assemblies.

Does this anchor bolt locator require an additional nut on the bottom of the anchor bolt?

No. The structural heavy-hex nut is attached directly to the pre-formed steel chair, which eliminates the need for an additional nut on the bottom of the anchor bolt, simplifying installation and reducing components on the job site.

What is the stand height and compatible bolt diameter for the ABL9-1-OST?

The ABL9-1-OST features a 1" stand height and is designed to accommodate a 1-1/8" diameter anchor bolt.

What materials and finishes are used in the construction of the ABL9-1-OST?

The nut is a heavy-hex type with an electrogalvanized finish, while the chair is fabricated from 14-gauge steel with a G90 galvanized finish, providing durability and corrosion resistance throughout the concrete forming process.

Note: Product dimensions may differ from picture. Please see item description for specifications.