DeWALT Anchors and Fasteners Screw-Bolt+ Hex Washer Head Screw Anchor, 1/2 in. x 4 in., Zinc Plated is a one-piece, heavy duty concrete screw anchor engineered for professional-grade fastening in a wide range of masonry and concrete base materials. With its patented thread design and finished hex washer head, this screw anchor delivers efficient installation with reduced torque demand - making it a go-to choice for contractors and builders who need reliable, removable anchoring in concrete and masonry applications.

Key Features

• Designed for standard ANSI tolerance drill bits - works with bits already on your job site, eliminating the need for special tooling and reducing setup time.
• Patented thread design offers low installation torque - reduces strain on tools and operators during repeated installations, improving overall productivity on large projects.
• Tough threads for tapping high strength concrete - the steel threads cut directly into the base material during installation, creating keyed engagement for a secure, dependable hold without the need for a separate expansion element.
• Ratchet teeth on the underside of the hex washer head lock against the fixture - this mechanical locking feature helps maintain clamping force and prevents loosening under vibration or load.
• Fully removable one-piece anchor design - allows for repositioning or removal after installation, providing flexibility on dynamic job sites where adjustments may be needed.
• Bright zinc-plated finish - provides a corrosion-resistant surface coating suitable for interior and protected concrete and masonry applications.
• Keyed thread engagement allows for reduced edge and spacing distances - enables anchoring closer to edges and adjacent anchors, expanding installation versatility in tight concrete and masonry situations.

Why This Product

• Simplified installation in demanding base materials - the patented thread design taps directly into normal-weight concrete, sand-lightweight concrete, concrete over steel deck, concrete masonry, and solid clay brick, eliminating the complexity of multi-component anchoring systems.
• Lower torque means faster, less fatiguing work - because the Screw-Bolt+ reduces installation torque compared to traditional anchors, it supports higher productivity when setting multiple anchors across a job site.
• Fully removable when plans change - unlike expansion anchors that are permanent once set, this screw anchor can be extracted and reinstalled, reducing material waste and rework costs.
• Finished hex washer head with integrated ratchet teeth - the hex head works with standard sockets for fast driving, while the ratchet teeth on the underside grip the fixture to help maintain secure holding power over time.

Specifications

• Brand: DeWALT
• Product Type: Screw Anchor (Screw-Bolt+)
• Diameter: 1/2 in.
• Fastener Length: 4 in.
• Head Style: Hex Washer Head
• Finish: Bright Zinc-Plated
• Primary Material: Bright zinc-plated and mechanically galvanized steel
• Weight: 0.254 lb.
• Country of Origin: Taiwan

Available Pack Options

• PFM1411420: 50 Pk
• PFM1411420 -3: 150 Pk

Approved Applications

• Normal-weight concrete
• Sand-lightweight concrete
• Concrete over steel deck
• Concrete masonry
• Solid clay brick

Frequently Asked Questions

Do I need a special drill bit to install the Screw-Bolt+ anchor?

No. The Screw-Bolt+ is specifically designed for use with standard ANSI tolerance drill bits, meaning you can use bits you already have on hand without purchasing specialty tooling.

Can the Screw-Bolt+ anchor be removed after installation?

Yes. The Screw-Bolt+ is fully removable after installation, which sets it apart from many traditional concrete anchors. This makes it practical for applications where adjustments, relocations, or fixture changes may be needed.

What base materials is the Screw-Bolt+ suitable for?

The Screw-Bolt+ is approved for use in normal-weight concrete, sand-lightweight concrete, concrete over steel deck, concrete masonry, and solid clay brick - covering the most common masonry and concrete substrates found on commercial and residential job sites.

What is the purpose of the ratchet teeth on the underside of the hex washer head?

The ratchet teeth on the underside of the hex washer head lock against the surface of the fixture being fastened. This feature helps maintain clamping force and resists loosening that can result from vibration or dynamic loading.

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