The Simpson EB-TY EB332W Premium Hidden Deck Fastener Kit with 2-1/4 in. Type 316 Stainless-Steel Screws by Simpson is a complete hidden deck-fastening solution engineered to keep boards firmly secured while preserving a clean, hardware-free surface on wood decks, composite decks, docks, and boardwalks. Redesigned with an integrated Type 300 series stainless-steel reinforcing plate, the system adds stiffness to hold boards firmly in place while maintaining the flexibility needed to accommodate seasonal expansion and contraction. Every component needed for installation is included in the kit, from the patented EB-GUIDE predrilling tool to the T-15 driver bit, making this a truly self-contained fastening system for professional and serious DIY deck builders alike.

Key Features

• Patented EB-GUIDE predrill guide provides precise fastener angle alignment - ensures consistent biscuit installations across every board, reducing guesswork and rework on the job site.
• Stainless-steel reinforced biscuit with increased pullover resistance - holds deck boards more securely under load, giving the finished deck greater long-term structural integrity.
• Underside keel for consistent fastener positioning - keeps each biscuit correctly seated during installation so spacing and alignment stay uniform across the entire deck surface.
• Radius sides and chamfered edges - allow the biscuit to seat faster and with less effort, speeding up installation without sacrificing accuracy.
• Type 316 stainless-steel trim-head, 6-lobe screws with black-painted heads - blend in with the EB-TY biscuit color to deliver a fully concealed, finished appearance with no exposed hardware.
• T-15 6-lobe driver bit included - reduces cam-outs during driving, protecting both the fastener and the surrounding decking material.
• 1/8 in. quick-release impact-ready drill bit included - compatible with impact drivers for faster predrilling without changing tool setups.
• Ipe wood plugs included for first and last board installations - provide a clean, finished edge detail at the perimeter of the deck where hidden fasteners cannot be used.
• Designed for 3/4 in. decking with moisture content greater than air dry (approx. 19%) - ensures proper fit and performance in the real-world moisture conditions common in green or partially dried hardwood decking.

Why This Product

• A truly complete system out of the box - the kit includes biscuits, screws, Ipe plugs, the EB-GUIDE predrilling tool, a quick-release drill bit, and a driver bit, so installers have every component needed to start and finish the job without sourcing additional hardware separately.
• Hidden fastening that does not compromise holding strength - the stainless-steel reinforcing plate integrated into each biscuit delivers the pullover resistance and board stability typically associated with face-fastening systems, while keeping the deck surface completely free of visible screws or nails.
• Built to handle seasonal wood movement - the combination of a rigid reinforcing plate and a flexible polypropylene biscuit body accommodates natural expansion and contraction in high-moisture wood decking, helping to prevent warping, cupping, and board creep over time.
• Versatile enough for demanding environments - with Type 316 stainless-steel screws and suitability for wood deck boards, composite deck boards, docks, and boardwalks, this system performs reliably in moisture-exposed and coastal applications where corrosion resistance is critical.

Specifications

• MPN: EB332WD316R175
• Biscuit Model No.: EB332W
• Brand: Simpson Strong-Tie
• Material: Polypropylene
• Installs With: Type 316 stainless-steel screw, included
• Screw Size: #7 x 2-1/4 in.
• Screw Type: Type 316 stainless-steel trim-head, 6-lobe with black-painted heads
• Decking Thickness: 3/4 in.
• Board Spacing Requirement: 3/32 in.
• Quantity: 175
• Country of Origin: United States

Approved Applications

• Dock and Boardwalk

What's Included

• (175) EB-TY Premium biscuits
• (190) Type 316 stainless-steel screws
• (12) Ipê wood plugs for first and last board installations
• (1) EB-GUIDE predrilling tool
• (1) 1/8 in. quick-release impact-ready drill bit
• (1) T-15 6-lobe driver bit for reduced cam outs

Frequently Asked Questions

What type of screw is included with the EB332WD316R175 kit?

This kit includes Type 316 stainless-steel trim-head, 6-lobe screws sized #7 x 2-1/4 in. The screws feature black-painted heads that blend in with the EB-TY biscuit for a fully concealed, finished appearance. A total of 190 screws are included in this 175-biscuit kit.

What decking thickness is this hidden fastener system designed for?

The EB-TY EB332W Premium Hidden Deck Fastener is designed for use with decking that is 3/4 in. thick. It is intended for use with wood that has a moisture content greater than air dry, which is approximately 19% or more.

What board spacing does this system require?

The EB332WD316R175 system requires a board spacing of 3/32 in. The included EB-GUIDE predrilling tool helps ensure precise fastener angle alignment, and the underside keel of each biscuit provides consistent fastener positioning to maintain proper spacing throughout the installation.

Do I need to purchase any additional tools or hardware to install this system?

No additional tools or hardware are required. This kit includes everything needed for installation: (175) EB-TY Premium biscuits, (190) stainless-steel screws, (12) Ipê wood plugs for first and last board installations, the EB-GUIDE predrilling tool, a 1/8 in. quick-release impact-ready drill bit, and a T-15 6-lobe driver bit for reduced cam outs.