The Simpson DIABST25 Setting Tool for 1/4-in. Rod DIAB Drop-In Anchor is a dedicated installation tool from Simpson from Simpson Strong-Tie, engineered to properly and consistently install internally threaded drop-in anchors in concrete. The tool works by driving the expander plug toward the bottom of the anchor until the shoulder of the setting tool makes contact with the top of the anchor, delivering repeatable, correctly seated installations every time - including demanding overhead and ceiling applications.

Key Features

• Designed specifically for DIAB anchors - purpose-built fitment means the tool seats anchors exactly as intended, reducing the risk of improper installation.
• Compatible with Simpson Strong-Tie Drop-In models DIAB25 and DIABL25 - ensures a confirmed, manufacturer-matched fit so there is no guesswork about compatibility.
• Sets drop-in anchors for overhead applications - gives installers the control needed for ceiling and inverted installations where consistent expansion is critical to load performance.
• Made from carbon steel - provides the hardness and durability to withstand repeated hammer-driven use on job sites without premature wear.
• Caution: Oversized holes will make it difficult to set the anchor and will reduce the anchor's load capacity - following correct hole-diameter requirements is essential to achieving full holding strength.
• Drop-in anchors are sold separately - allows you to purchase only the setting tool as a replacement or addition without being bundled with anchors you may already have.

Why This Product

• Manufacturer-matched precision - because this tool is designed by Simpson Strong-Tie specifically for the DIAB25 and DIABL25 drop-in anchors, it drives the expander plug to the exact depth required for a proper set, helping protect the anchor's rated load capacity.
• Consistent results across every installation - the shoulder-contact stop built into the tool's design gives installers a clear, tactile signal that the anchor is fully set, reducing variability from one fastening point to the next.
• Overhead-ready performance - the tool is explicitly suited for overhead concrete anchoring, making it a reliable choice for suspended systems, ceiling attachments, and other inverted-mount applications.
• Durable carbon steel construction - the carbon steel body stands up to the repeated impact forces of hammer-driven anchor setting, making this a long-lasting addition to a fastening toolkit.

Specifications

• Model Number: DIABST25
• Brand: Simpson Strong-Tie
• Compatible Models: DIAB25, DIABL25
• Rod Size: 1/4 in.
• Material: Carbon Steel
• Packaging: Packs of 1 and Cartons of 50

Frequently Asked Questions

Which drop-in anchor models is the DIABST25 compatible with?

The DIABST25 setting tool is specifically designed for use with Simpson Strong-Tie Drop-In models DIAB25 and DIABL25.

How does the DIABST25 setting tool work?

Drop-in anchors are installed by driving the expander plug toward the bottom of the anchor until the shoulder of the setting tool makes contact with the top of the anchor, ensuring a proper and consistent installation every time.

Can the DIABST25 be used for overhead applications?

Yes. The DIABST25 is designed to set drop-in anchors for overhead applications, making it suitable for ceiling and inverted installations.

Are the drop-in anchors included with the DIABST25?

No. Drop-in anchors are sold separately. The DIABST25 is the setting tool only and is intended for use with compatible Simpson Strong-Tie DIAB25 or DIABL25 drop-in anchors.