DeWALT Anchors and Fasteners Power-Stud+ SD1 1/2" x 4-1/2" Wedge Expansion Anchor is a fully threaded, torque-controlled wedge bolt engineered for consistent, reliable performance in both cracked and uncracked concrete. The zinc-plated carbon steel body and expansion clip provide durable holding strength across a wide range of concrete base materials, making this anchor a dependable choice for structural and general construction fastening applications where precision and repeatability matter.

Key Features

• Fully threaded, torque-controlled wedge expansion design - ensures consistent and repeatable installation results in high and low strength concrete, reducing the risk of under-setting or over-torquing
• Nominal drill bit size matches the anchor diameter - simplifies tool selection and speeds up installation since no upsizing or custom bit is required
• Designed for installation through standard fixture holes - allows the anchor to be set after the fixture is already positioned, saving time and reducing rework during assembly
• Length ID code and identifying marking stamped on the head of each anchor - provides quick visual verification on the jobsite, reducing the chance of misidentification when multiple anchor sizes are in use
• Anchor design allows for follow-up expansion after setting under tensile loading - helps maintain holding strength even as load conditions develop, adding a layer of performance reliability over time
• Zinc-plated carbon steel body and expansion clip - delivers solid corrosion resistance in interior concrete applications while maintaining structural integrity during and after installation
• Hex nut head style - compatible with standard wrenches and impact tools, making installation fast and straightforward for professionals and contractors

Why This Product

• Versatile base material compatibility - suitable for use in normal-weight concrete, sand-lightweight concrete, concrete over steel deck, and grouted concrete masonry, covering a broad range of common construction scenarios with a single anchor specification
• Tested and designed for cracked concrete - unlike anchors rated only for uncracked concrete, this wedge bolt is engineered to perform consistently even where concrete has cracked under load or environmental stress, giving you confidence in critical connections
• Simplified installation workflow - because the drill bit size matches the anchor diameter and the anchor passes through standard fixture holes, there is no need for oversized holes or special tooling, cutting down on installation steps and potential errors
• Built-in follow-up expansion capability - the anchor continues to expand under tensile loading after initial setting, helping sustain holding performance over the life of the connection without requiring re-torquing

Specifications

• Brand: DeWALT
• Product Type: Wedge Bolt
• Diameter: 1/2 in.
• Fastener Length: 4.5 in.
• Head Style: Hex Nut
• Primary Material: Carbon Steel
• Fastener Plating: Zinc
• Finish: Silver
• Thread Type: Standard
• Connection Design: Concrete and Masonry
• Design Type: Hex
• Weight: 0.258 lb.
• Country of Origin: China

Available Pack Options

• 7423SD1-PWR: 50 Pk
• 7423SD1-PWR -4: 200 Pk

Approved Applications

• Normal-weight concrete - suitable for standard poured concrete structural applications
• Sand-lightweight concrete - appropriate for lightweight concrete mixes used in floor and deck systems
• Concrete over steel deck - can be used in composite deck assemblies common in commercial construction
• Grouted concrete masonry - suitable for grouted CMU block walls and masonry structures
• Cracked and uncracked concrete - engineered to perform reliably in both cracked and undamaged concrete base materials

Frequently Asked Questions

What size drill bit do I need for this anchor?

The nominal drill bit size for this anchor is the same as the anchor diameter - 1/2 in. You do not need to upsize or use a special bit, which simplifies setup and reduces the chance of installation errors.

Can this anchor be used in cracked concrete?

Yes. The Power-Stud+ SD1 is specifically designed for consistent performance in both cracked and uncracked concrete, making it suitable for applications where concrete integrity may be uncertain or where cracking is expected over time.

Does the anchor need to be installed before the fixture is positioned?

No. The anchor is designed to be installed through standard fixture holes, which means you can position and align your fixture first, then drive the anchor through the hole without removing the fixture from its location.

What base materials is this wedge bolt approved for?

This anchor is suitable for use in normal-weight concrete, sand-lightweight concrete, concrete over steel deck, and grouted concrete masonry - covering a wide range of base materials common in both residential and commercial construction.

Note: The image displayed is a generic representation of the type of product. Product dimensions and/or thread length may differ from picture.