The DeWALT ANCHORS & FASTENERS Power-Stud+ SD1 5/8 in. x 10 in. Carbon Steel Wedge Expansion Anchor is a fully threaded, torque-controlled wedge anchor engineered to deliver consistent holding performance in both cracked and uncracked concrete. With a zinc-plated carbon steel body and expansion clip, this hex nut anchor is built for demanding structural applications in normal-weight concrete, sand-lightweight concrete, concrete over steel deck, and grouted concrete masonry - giving contractors and builders a reliable fastening solution across a wide range of base materials.

Key Features

• Fully threaded, torque-controlled wedge expansion design - provides consistent clamping force and reliable load performance in both cracked and uncracked concrete without guesswork during installation
• Zinc-plated carbon steel body and expansion clip - delivers corrosion resistance and durability suited to structural concrete and masonry fastening environments
• Nominal drill bit size matches anchor diameter (5/8 in.) - simplifies tool selection and reduces installation errors by eliminating the need for an oversized pilot hole
• Can be installed through standard fixture holes - saves time on job sites by allowing the anchor to be set after the fixture is already in position, rather than requiring pre-drilling through the workpiece separately
• Length ID code and identifying marking stamped on the hex nut head - makes field verification fast and accurate, reducing the risk of installing the wrong anchor size
• Anchor design allows for follow-up expansion after setting under tensile loading - maintains holding values even as the anchor experiences real-world load conditions, adding a margin of performance confidence
• Consistent performance in both high and low strength concrete - makes this wedge bolt suitable across a broader range of concrete substrate conditions rather than being limited to a narrow specification range
• Hex nut head style - compatible with standard wrenches and impact tools, supporting fast and efficient torque application in the field

Why This Product

• Designed for cracked concrete applications - many standard wedge anchors are rated only for uncracked concrete, but the Power-Stud+ SD1 is specifically engineered to perform consistently in cracked concrete as well, making it the appropriate choice when structural integrity of the base material cannot be guaranteed
• Versatile base material compatibility - approved for use in normal-weight concrete, sand-lightweight concrete, concrete over steel deck, and grouted concrete masonry, reducing the need to stock multiple anchor types for different substrates on the same job
• The 5/8 in. x 10 in. size provides substantial embedment depth - suited to heavier structural connections and applications where deeper anchorage is required to meet load demands
• Follow-up expansion capability under tensile load - unlike anchors that are fully set at installation, this design continues to expand as load is applied, helping maintain clamping performance under real service conditions rather than only at the moment of installation

Specifications

• Brand: DeWALT
• Product Type: Wedge Bolt
• Primary Material: Carbon Steel
• Plating / Finish: Zinc Plated
• Color / Finish: Silver
• Head Style: Hex Nut
• Thread Type: Standard
• Diameter: 5/8 in.
• Fastener Length: 10 in.
• Weight: 0.824 lb
• Connection Design: Concrete and Masonry
• Country of Origin: China

Available Pack Options

• 7439SD1-PWR: 25 Pk
• 7439SD1-PWR -2: 50 Pk

Approved Applications

• Normal-weight concrete - structural fastening where standard concrete density is present
• Sand-lightweight concrete - suitable for concrete mixes with reduced density aggregate where lighter structural slabs are used
• Concrete over steel deck - appropriate for composite deck assemblies common in commercial and industrial construction
• Grouted concrete masonry - compatible with filled CMU block construction, expanding the use case to masonry wall applications

Frequently Asked Questions

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 the concrete substrate may have developed cracks over time or under load.

What drill bit size is required to install this anchor?

The nominal drill bit size is the same as the anchor diameter - 5/8 in. This simplifies installation by matching the drill bit size directly to the anchor size, eliminating the need to reference a separate drill size chart.

Does the anchor need to be set before the fixture is put in place?

No. The Power-Stud+ SD1 can be installed through standard fixture holes, which means the fixture can be positioned first and the anchor driven through it into the concrete - a practical advantage when aligning structural components on the job site.

What does "follow-up expansion after setting under tensile loading" mean in practice?

It means the anchor continues to expand slightly as tensile (pull-out) loads are applied during service, rather than being fully static after initial installation torque is applied. This characteristic helps the anchor maintain its holding performance under real-world loading conditions.

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