DeWALT Anchors and Fasteners Power-Stud+ SD1 1/2" x 8-1/2" Wedge Expansion Anchor is a fully threaded, torque-controlled wedge bolt engineered for consistent, reliable holding power in both cracked and uncracked concrete. Built with a zinc plated carbon steel body and expansion clip, this hex nut anchor delivers premium performance across a wide range of structural and general construction fastening applications - making it a go-to choice for contractors working with concrete and masonry substrates.

Key Features

• Fully threaded, torque-controlled wedge expansion design - provides consistent clamping force and predictable load performance in cracked and uncracked concrete without requiring extra hardware or adjustment
• Consistent performance in high and low strength concrete - gives installers confidence across varying job site conditions and concrete mix strengths
• Nominal drill bit size matches the anchor diameter - simplifies tool selection and reduces setup time by eliminating the need for an oversized pilot hole
• Anchor can be installed through standard fixture holes - speeds up installation by allowing the anchor to pass through the attached fixture directly, without pre-positioning
• Length ID code and identifying marking stamped on the head of each anchor - enables quick visual verification in the field and ensures the correct anchor is used for each application
• Anchor design allows for follow-up expansion after setting under tensile loading - helps maintain holding strength even when the anchor is subjected to ongoing load, adding a layer of long-term reliability
• Zinc plated carbon steel body and expansion clip - provides a durable, corrosion-resistant silver finish suitable for typical interior structural fastening conditions
• Nut and washer included - allows for immediate installation right out of the package without sourcing additional hardware

Why This Product

• Engineered for cracked and uncracked concrete - this wedge anchor is suitable for real-world structural conditions where concrete cracking is common, reducing the risk of under-performing anchors in demanding applications
• Versatile base material compatibility - works in normal-weight concrete, sand-lightweight concrete, concrete over steel deck, and grouted concrete masonry, giving installers a single anchor solution across multiple substrate types
• Follow-up expansion capability under tensile load - unlike basic expansion anchors that set once and hold statically, this design continues to expand as load is applied, helping maintain grip over the life of the connection
• Ready-to-install hex nut configuration - the included nut and washer mean no additional trips to the hardware supplier, keeping projects moving efficiently on the job site

Specifications

• Brand: DeWALT
• Product Type: Wedge Bolt
• Diameter: 1/2 in.
• Fastener Length: 8.5 in.
• Head Style: Hex Nut
• Thread Type: Standard
• Primary Material: Carbon Steel
• Fastener Plating: Zinc
• Finish: Silver
• Connection Design: Concrete and Masonry
• Design Type: Hex
• Weight: 0.432 lb
• Country of Origin: China

Available Pack Options

• 7427SD1-PWR: 25 Pk
• 7427SD1-PWR -4: 100 Pk

Approved Applications

• Normal-weight concrete - ideal for standard slab and foundation fastening where predictable wedge anchor performance is required
• Sand-lightweight concrete - suitable for lightweight structural concrete often used in elevated decks and platform construction
• Concrete over steel deck - supports fastening applications on composite floor systems common in commercial construction
• Grouted concrete masonry - compatible with grouted CMU walls for structural attachment in masonry framing applications

Frequently Asked Questions

What drill bit size should I use to install this anchor?

The nominal drill bit size is the same as the anchor diameter - in this case, a 1/2 in. drill bit. This simplifies hole prep and eliminates guesswork when setting up for installation.

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 appropriate for applications where concrete cracking is expected or has already occurred.

Does this anchor include a nut and washer?

Yes. A nut and washer are included with the anchor, so no additional hardware is needed to complete the installation.

What happens to the anchor's holding strength once it is set under load?

The anchor design allows for follow-up expansion after setting under tensile loading. This means the anchor continues to expand as tensile load is applied, helping maintain grip and connection integrity over time rather than relying solely on the initial set.

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