The Simpson Titen 1/4 in. x 1-1/4 in. Phillips Flat-Head Stainless Steel Concrete Screw is a mechanical fastener from Simpson engineered for secure, direct attachment into concrete, brick, grouted CMU, hollow-block masonry, and select preservative-treated wood applications. Built from Type 410 stainless steel with a zinc-plated protective overcoat, this concrete screw threads directly into a pre-drilled hole without requiring a separate anchor, delivering a medium level of corrosion resistance suited to environments where exposure to moisture or mild corrosive conditions is a real-world concern.

Key Features

• Type 410 stainless steel construction with zinc-plated protective overcoat - provides a medium level of corrosion resistance, making this screw a reliable choice for interior and semi-exposed environments where standard carbon-steel fasteners may corrode prematurely
• Phillips flat-head drive style - sits flush with or below the surface of the fastened material, producing a clean, low-profile installation that works well when mounting electrical boxes, light fixtures, and similar hardware to concrete or masonry
• Compatible with concrete, brick, grout-filled CMU, hollow-block masonry, and some preservative-treated wood - broad base-material approval means one fastener works across multiple substrates on the same job site without switching products
• Requires a 3/16 in. drill bit - which is included in each box - eliminates a separate trip to source the correct bit and ensures the pilot hole is sized precisely for proper thread engagement and holding strength
• Direct-thread installation with no anchor required - threads cut directly into the base material during driving, simplifying installation steps and reducing total hardware needed on the job
• Backed by Simpson Strong-Tie engineering - designed and tested for use in demanding structural and general-purpose applications where consistent anchor performance is expected

Why This Product

• Corrosion resistance where standard screws fall short - the Type 410 stainless steel material paired with a zinc-plated protective overcoat makes this screw the right call for applications where moisture or corrosive conditions would compromise an ordinary carbon-steel concrete fastener over time
• Versatile enough for the mixed substrates found on most masonry job sites - approval for concrete, brick, grout-filled CMU, hollow-block, and some preservative-treated wood means crews can carry a single fastener solution across multiple application types without restocking mid-project
• Everything needed for installation ships in the box - because a properly sized drill bit is included, contractors and installers can begin work immediately without sourcing additional tooling, keeping the workflow moving
• Trusted Simpson design built for demanding structural use - specifiers and contractors rely on Simpson mechanical anchors for applications where consistent load performance and installation reliability are non-negotiable requirements

Specifications

• Model Number: TTN25114PFSS
• Brand: Simpson Strong-Tie
• Diameter: 1/4 in.
• Length: 1-1/4 in.
• Material: Type 410 stainless steel
• Finish: Type 410 stainless steel, zinc plated with protective overcoat
• Head Style: Phillips flat-head
• Drill Bit Diameter: 3/16 in.

Approved Applications

• Concrete substrates
• 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 hardware 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 these Titen screws compatible with?

These screws are suitable for use in concrete, brick, grout-filled CMU, and hollow-block applications. They are also suitable for some preservative-treated wood applications.

What size drill bit is required for installation?

A 3/16 in. diameter drill bit is required. For convenience, one drill bit is included in each box.

What material are these Titen screws made from, and why does it matter?

These screws are made from Type 410 stainless steel and feature a zinc-plated protective overcoat. This construction provides a medium level of corrosion resistance, making them appropriate for environments where some exposure to moisture or corrosive conditions is expected.

What is the head style on the TTN25114PFSS, and what are its installation benefits?

The TTN25114PFSS features a Phillips flat-head design, which sits flush with the surface upon installation. This low-profile head style is ideal for applications where a smooth, unobtrusive finish is required when fastening components to concrete or masonry.

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