The Simpson Titen 1/4 in. x 4 in. Phillips Flat-Head Stainless Steel Concrete Screw is a dependable mechanical anchor engineered by Simpson Strong-Tie for secure fastening into concrete, brick, grout-filled CMU, hollow-block masonry, and select preservative-treated wood applications. Fabricated from Type 410 stainless steel with a zinc-plated protective overcoat, these concrete masonry screws are built to perform in environments where a medium level of corrosion resistance is required - delivering the reliable anchoring performance that specifiers and contractors trust for demanding structural work. The Phillips flat-head profile sits flush against the surface for a clean, low-profile finish, making these fasteners well suited for attaching electrical boxes, light fixtures, and other building components directly to concrete and masonry without a separate expansion anchor.

Key Features

• Type 410 stainless steel construction with zinc-plated protective overcoat - provides a medium level of corrosion resistance, making these screws a reliable choice for interior and exterior masonry applications where standard carbon steel fasteners fall short.
• Phillips flat-head drive style - the countersunk head sits flush with the work surface, reducing snag points and creating a cleaner finished appearance on exposed installations.
• Compatible with concrete, brick, grout-filled CMU, hollow-block masonry, and some preservative-treated wood - broad base-material compatibility means fewer fastener SKUs to manage across multi-material jobsites.
• Direct-thread installation into a pre-drilled hole - no separate expansion anchor required, simplifying and speeding up the anchoring process for contractors and installers.
• Requires a 3/16 in. diameter drill bit - the correctly sized bit is included in each box, so installation can begin immediately without a separate trip to source tooling.
• Designed and backed by Simpson Strong-Tie - a brand trusted by structural specifiers and contractors for mechanical anchors used in demanding applications, giving buyers confidence in load performance and product consistency.

Why This Product

• Stainless steel where carbon steel falls short - the Type 410 stainless steel material with a zinc-plated protective overcoat addresses corrosion concerns that standard concrete screws cannot, making this anchor the right call for projects requiring enhanced durability in challenging environments.
• Versatile enough for the full range of masonry substrates - approval for concrete, brick, grout-filled CMU, hollow-block masonry, and some preservative-treated wood means one fastener solution covers a wide variety of anchoring tasks without compromising engineered performance.
• Ready-to-install convenience - the included 3/16 in. drill bit eliminates a common jobsite delay, letting installers get straight to work without hunting down a separately sourced bit in the correct size.
• Trusted Simpson Strong-Tie engineering - Simpson mechanical anchors are designed for optimum performance under the most demanding structural applications, giving specifiers and contractors a fastener they can confidently call out by name on project documentation.

Specifications

• Model Number: TTN25400PFSS
• Diameter: 1/4 in.
• Length: 4 in.
• Material: Type 410 Stainless Steel
• Finish: Type 410 Stainless Steel, Zinc plated with a protective overcoat
• Head Style: Phillips Flat-Head
• Drill Bit Diameter: 3/16 in.

Approved Applications

• Concrete
• Brick
• Grout-filled CMU (Concrete Masonry Unit)
• Hollow-block masonry
• Some preservative-treated wood applications
• Attaching components such as electrical boxes, light fixtures, and other building components to concrete and masonry surfaces

What's Included

Each pack contains (100) Stainless Steel Concrete Screws, One drill bit is included in each box.

Frequently Asked Questions

What base materials are the Simpson TTN25400PFSS Titen screws compatible with?

These Titen screws are suitable for use in concrete, brick, grout-filled CMU, hollow-block masonry, and some preservative-treated wood applications, making them highly versatile for a wide range of structural anchoring tasks.

What drill bit size is required to install the TTN25400PFSS Titen screw?

A 3/16 in. diameter drill bit is required for installation. For convenience, one appropriately sized drill bit is included in each box of Titen screws.

Why are these screws made from Type 410 stainless steel?

Type 410 stainless steel provides a medium level of corrosion resistance, making these screws well-suited for environments where enhanced protection against corrosion is needed compared to standard carbon steel fasteners. The zinc-plated protective overcoat further adds to their durability.

What is the head style of the TTN25400PFSS, and why does it matter?

The TTN25400PFSS features a Phillips flat-head design, which sits flush with or slightly below the surface of the material being fastened. This low-profile head style is ideal for applications where a smooth, unobtrusive finish is important, such as when attaching electrical boxes or light fixtures to concrete and masonry.

Note: Product dimensions and/or thread length may differ from picture. Please see the item description above for specifications.