The DeWALT ANCHORS & FASTENERS Power-Stud+ SD1 Hex Nut Carbon Steel 1/2" x 5-1/2" Wedge Expansion Anchor is a fully threaded, torque-controlled wedge expansion anchor engineered for consistent, reliable performance in both cracked and uncracked concrete. Designed for demanding structural anchoring applications, this carbon steel wedge bolt delivers dependable holding strength across a range of base materials including normal-weight concrete, sand-lightweight concrete, concrete over steel deck, and grouted concrete masonry. The zinc-plated carbon steel body and expansion clip provide premium corrosion resistance for long-lasting performance, while the included nut and washer make this a ready-to-install fastening solution. Whether you are anchoring structural steel, mechanical equipment, or fixtures to concrete surfaces, this wedge anchor is built to meet the challenge.

Key Features

• Fully threaded, torque-controlled wedge design - ensures consistent clamping force and reliable load performance in both high and low strength concrete, reducing the risk of under- or over-setting
• Nominal drill bit size matches the anchor diameter (1/2") - simplifies tool selection and speeds up installation by eliminating guesswork on hole sizing
• Anchor can be installed through standard fixture holes - allows installers to position fixtures first and drop the anchor through without removing the fixture, saving time on the job
• Length ID code and identifying marking stamped on the head of each anchor - enables quick visual verification of the correct anchor during installation and inspection
• Anchor design allows for follow-up expansion after setting under tensile loading - provides added safety margin as the anchor continues to tighten against the concrete under load
• Zinc-plated carbon steel body and expansion clip - delivers corrosion resistance and durability in typical interior and protected concrete anchoring environments
• Compatible with cracked and uncracked concrete - gives engineers and contractors confidence across a broader range of real-world concrete conditions, including seismically active areas where concrete cracking may occur

Why This Product

• Reliable in both cracked and uncracked concrete - many expansion anchors are only rated for uncracked concrete, but this Power-Stud+ SD1 is specifically designed for performance in cracked concrete as well, making it suitable for a wider range of structural applications and code-compliant installations
• Works across multiple base materials - approved for use in normal-weight concrete, sand-lightweight concrete, concrete over steel deck, and grouted concrete masonry, giving you one versatile anchor solution across different jobsite conditions
• Simplified drilling with matched anchor and bit diameter - the 1/2" anchor uses a 1/2" drill bit, making setup straightforward and reducing the chance of installation errors that can compromise holding strength
• Nut and washer included - the anchor ships as a complete, ready-to-install unit so you can get to work without sourcing additional hardware separately

Specifications

• Brand: DeWALT
• Product Type: Wedge Bolt
• Product Name: Power-Stud+ SD1 Hex Nut Carbon Steel 1/2" x 5-1/2"
• Diameter: 0.500 in.
• Fastener Length: 5.5 in.
• Head Style: Hex Nut
• Thread Type: Standard
• Primary Material: Carbon Steel
• Fastener Plating: Zinc
• Finish: Silver
• Design Type: Hex
• Connection Design: Concrete & Masonry
• Weight: 0.301 lb.
• Country of Origin: China

Available Pack Options

• 7424SD1-PWR: 50 Pk
• 7424SD1-PWR -3: 150 Pk

Approved Applications

• Normal-weight concrete - suitable for standard structural concrete anchoring applications
• Sand-lightweight concrete - approved for use where lighter concrete mixes are specified
• Concrete over steel deck - compatible with composite slab construction commonly found in commercial and industrial buildings
• Grouted concrete masonry - approved for anchoring into grouted CMU walls and similar masonry assemblies
• Cracked concrete applications - designed for consistent performance in concrete that may have experienced cracking due to structural or seismic loading
• Uncracked concrete applications - equally suited to standard uncracked concrete conditions for versatile use across project types

Frequently Asked Questions

What base materials is the Power-Stud+ SD1 anchor approved for?

The Power-Stud+ SD1 is designed for use in normal-weight concrete, sand-lightweight concrete, concrete over steel deck, and grouted concrete masonry. It is rated for performance in both cracked and uncracked concrete, making it a versatile choice for a wide range of structural anchoring applications.

What size drill bit should I use with this 1/2" anchor?

The nominal drill bit size for this anchor is the same as the anchor diameter. For this 1/2" x 5-1/2" wedge anchor, you should use a 1/2" drill bit. This matched sizing simplifies installation and helps ensure proper hole fit and holding performance.

Can this anchor be installed through a pre-positioned fixture?

Yes. The Power-Stud+ SD1 anchor is designed so it can be installed through standard fixture holes. This means you can position the fixture on the concrete surface first, then drive the anchor through the fixture hole directly into the concrete, without needing to remove the fixture during installation.

What does "torque-controlled" mean for this wedge anchor?

A torque-controlled anchor is set by applying a specified installation torque to the nut, which causes the expansion clip to wedge against the concrete hole walls and lock the anchor in place. The Power-Stud+ SD1 is a torque-controlled design, which also allows for follow-up expansion after setting under tensile loading - meaning the anchor can continue to expand slightly as load is applied, providing an additional margin of holding performance in service.