Key Features

Consistent Hidden Install The included EB-GUIDE predrill tool helps place each fastener at the correct angle, so you get a cleaner hidden-deck install with less guesswork from board to board. Reinforced For Hardwood A Type 300 series stainless-steel reinforcing plate adds holding power and better pullover resistance, which matters when you are working with dense premium decking. Built-In 3/32 in. Gap This Simpson Strong-Tie hidden deck fastener kit is set up for a 3/32 in. board spacing, helping manage drainage and seasonal movement while keeping the deck surface free of face screws.

Overview

The Simpson Strong-Tie EB-TY Premium Hidden Deck Fastener w/ 2-1/4-in. Type 305 Screws, 175-Pack (EB332WDR175) is a concealed deck fastening kit for builders who want a clean finished surface without visible top-side screws. This is a hidden deck fastening system designed for concealed deck board installation. Model Number: EB332WDR175. This version includes 175 EB-TY Premium biscuits, matching Type 305 stainless-steel trim-head screws, and the setup tools needed to get started on grooved deck board installation.

What makes this system matter is how it combines appearance and holding strength. The EB-TY biscuit uses a Type 300 series stainless-steel reinforcing plate to improve stiffness and pullover resistance while still allowing the flexibility needed as deck boards expand and contract with changing seasons. On the job, that means the boards stay better controlled during installation, with less tendency to shift or walk as you fasten them down.

This EB332WDR175 kit is the 3/32 in. spacing version and is intended for 3/4 in. or greater wood with moisture content greater than air dry, roughly 19%, which lines up with the manufacturer guidance for air-dried decking. That spacing matters. It is part of the system design, not just a side note, because the fastener helps maintain a uniform gap between boards for drainage, movement, and a more consistent finished look across the whole deck.

The included EB-GUIDE predrill tool is one of the real time-savers here. Instead of free-handing the angle and hoping the screw lands where it should, the guide helps line up the pilot hole for repeatable placement. The underside keel on the biscuit helps keep positioning consistent, while the radius sides and chamfered edges make it easier to align the next board and keep moving. If you are installing a lot of boards, those little alignment details add up.

The screw package is matched to the system. This kit uses #7 x 2-1/4 in. Type 305 stainless-steel screws with black-painted heads so the exposed hardware used at first and last board locations is less noticeable. Stainless construction is important on an exterior deck because it gives you better long-term corrosion resistance than basic coated fasteners, especially when paired with dense hardwood decking and outdoor exposure.

This kit is more complete than a bag of clips alone. Along with the fasteners and screws, you also get Ip plugs for first and last board installations, an EB-GUIDE predrilling tool, a 1/8 in. quick-release impact-ready drill bit, and a T-15 6-lobe driver bit. That matters for anyone trying to keep a job moving, because you are not chasing down specialty pieces just to start laying boards.

In practical use, the system is a strong fit for deck builders, remodelers, and serious DIY users working with premium hardwoods or other grooved deck boards where appearance matters as much as structural hold. It is also suited for residential and commercial deck applications where exposed face screws would take away from the finished look. If you are building a deck where clean lines and consistent spacing are part of the goal, this system earns its keep.

Bottom line: this is not just a clip. It is a coordinated hidden-fastening system built around repeatable installation, stainless hardware, and a cleaner finished deck surface. If you are using the right board profile and the right moisture-range material for the 3/32 in. spacing version, it gives you a more controlled install and a better-looking result than a face-fastened deck.

Cleaner Deck Surface, Better Finished Look

If you want the deck boards to be the focus instead of a field of visible screw heads, this system is built for that. The hidden biscuit design keeps the fastening point between boards while still locking the deck board to the joist.

• Creates a fastener-free deck surface for a cleaner finished appearance
• Black-painted trim-head screws help first and last board fastening blend in better

Built To Install More Consistently

The included predrill guide is the part that makes this system more approachable for both pros and experienced DIY deck builders. It helps you repeat the same screw angle from board to board so the finished deck looks uniform and the install goes smoother.

• EB-GUIDE predrill tool helps align fasteners at the correct angle
• Underside keel, radius sides, and chamfered edges help with positioning and board alignment

Hardware Matched For Outdoor Decking

This is a full fastening system, not just a pack of clips. The stainless screw, reinforced biscuit, pilot bit, driver bit, and plug components are meant to work together so you can move from layout to fastening without piecing together separate parts.

• Uses #7 x 2-1/4 in. Type 305 stainless-steel screws for corrosion resistance
• Includes plugs for first and last board fastening points where hidden clips are not used

What’s in the Box

• (175) EB-TY Premium biscuits
• (190) #7 x 2-1/4 in. Type 305 stainless-steel screws
• (12) Ip 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

Key Specifications

Compatibility

Board Profile Works with pregrooved decking and biscuit-cut slots. Deck Board Thickness Use for 3/4 in. or greater wood decking. Decking Condition This EB332WDR175 version is the 3/32 in. spacing option intended for air-dried decking.

Built For

Deck Building Outdoor Living Projects Carpentry Remodeling General Contracting Premium Hardwood Decking Residential Decks Commercial Decks

Pro Tip

Match the spacing version to the decking condition before you start cutting slots. This EB332WDR175 kit is the 3/32 in. version for air-dried boards, so if your material is kiln-dried, step up to the wider-spacing version instead of trying to force the fit on site.

Tool Nut’s Take

Tool Nut’s Take

Simpson Strong-Tie EB-TY Premium Hidden Deck Fastener w/ 2-1/4-in. Type 305 Screws, 175-Pack (EB332WDR175) is the right pick when the finished deck has to look clean

This system makes the most sense for builders who care about a straight, consistent hidden-fastener install and do not want to piece together clips, screws, bits, and setup tools separately.

• Who it’s for: Deck builders, remodelers, and serious DIY users installing grooved hardwood or other premium deck boards where surface appearance matters.
• Why it stands out: You get a reinforced biscuit, matched Type 305 stainless screws, the EB-GUIDE alignment tool, and the bits and plugs needed to handle first and last boards with one kit.
• Worth knowing: This is a system product, so spacing and board condition matter. The EB332WDR175 version is specifically the 3/32 in. option for air-dried decking, not a one-size-fits-all deck clip.

Common Questions

• What board spacing does this kit create? This EB332WDR175 version is designed for a 3/32 in. gap between deck boards.
• What decking thickness does it work with? It is intended for 3/4 in. or greater wood decking.
• What screw type comes with the system? The kit uses #7 x 2-1/4 in. Type 305 stainless-steel trim-head screws.
• Is this version for kiln-dried or air-dried decking? The manufacturer lists this 3/32 in. model for air-dried decking and for wood with moisture content greater than approximately 19%.