The Simpson Strong-Tie Titen Turbo 1/4 in. x 3-3/4 in. 316 Stainless-Steel Trim-Head Concrete and Masonry Screw is a high-performance concrete screw anchor engineered for demanding installations in corrosive and severe environments. Built from Type 316 stainless steel and finished with an engineered TruShield coating, this trim-head masonry fastener delivers superior tension load performance and long-lasting corrosion resistance - making it a dependable choice for coastal construction, poolside enclosures, chemical-exposed structures, and other high-exposure applications. The 1/4 in. diameter screw installs cleanly into a 3/16 in. pilot hole using a standard ANSI drill bit, with no matched-tolerance bit required, and is compatible with an impact driver or cordless drill for fast, repeatable placement in concrete, brick, and masonry substrates.

Key Features

• Type 316 stainless-steel body for long-lasting corrosion resistance in severe environments - marine-grade 316 stainless steel holds up against saltwater, chemicals, and harsh outdoor exposure where lesser alloys break down over time.
• Hardened, alloy-steel tip with serrations to cut through concrete - the serrated cutting tip bites aggressively into masonry and concrete for immediate thread engagement, reducing the effort required to start the fastener.
• Engineered TruShield coating provides additional protection against dissimilar metals - this secondary layer of defense guards against galvanic corrosion when the anchor is used alongside other metal components in the assembly.
• Superior tension load performance - designed to maintain holding power under demanding loads, giving installers confidence in structural and high-stress connections.
• Matched-tolerance bit not required; use a standard ANSI drill bit for installation - compatibility with common ANSI drill bits simplifies the installation process and eliminates the need for specialty tooling, saving time on the job.
• Designed for installation with an impact driver or cordless drill; installation using the Titen Turbo Installation Tool is recommended - works with tools already on the job site, while the recommended installation tool helps optimize driving consistency and performance.
• The 6-lobe drive's large contact area provides better bit grip for more secure driving, lower torque and longer bit life (T25 driver bit included) - the T25 6-lobe drive reduces cam-out and slippage during driving, extending both bit life and the working life of the fastener's drive recess.
• Drill bit diameter: 3/16 in. - a precisely specified pilot hole size ensures proper thread engagement and consistent holding strength in the base material.

Why This Product

• Type 316 stainless steel combined with the TruShield coating delivers a two-layer approach to corrosion protection - the stainless body resists environmental degradation while the coating addresses the additional risk of galvanic reactions from contact with dissimilar metals.
• A hardened, serrated alloy-steel tip allows the screw to cut directly into concrete and masonry without requiring a special drill bit - a standard ANSI 3/16 in. drill bit is all that is needed, reducing setup complexity on the job site.
• The T25 6-lobe drive geometry maximizes bit-to-fastener contact, resulting in lower driving torque, more secure bit engagement, and reduced wear on both the driver bit and the fastener head - and the T25 driver bit is included in the package.
• Compatible with both an impact driver and a cordless drill, this trim-head concrete screw is a practical choice for professionals and do-it-yourself installers alike who need reliable performance in a range of field conditions.

Specifications

• Brand Name: Simpson Strong-Tie
• Part Number: TNTSS625334TTR
• Diameter: 1/4 in.
• Length: 3 3/4 in.
• Drill Bit Diameter: 3/16 in.
• Material: Type 316 Stainless Steel
• Coating: TruShield Coating
• Head Type: Trim Head
• Drive Type: T25 6-Lobe
• Product Class: Concrete Screw
• Quantity: 50 per package

What's Included

• T25 driver bit

Install With

• Standard ANSI drill bit