The Simpson EB-TY Hidden Deck Fastener is a polypropylene biscuit fastener system built for contractors and DIYers who want a clean, hardware-free surface on composite or wood deck boards. Each biscuit fits into a slot cut into the edge of the deck board using a standard biscuit joiner, so all fastening is done from the top side into the joist while keeping every screw head completely out of sight. Nesting each successive board against the installed biscuit automatically delivers consistent spacing and uniform height across the entire deck surface, eliminating the guesswork from layout and board alignment.

Key Features

• Top-side fastening into the board edge - keeps the deck surface completely free of visible screw heads, producing a cleaner finished appearance without additional finishing steps.
• Standard biscuit joiner compatibility - no specialty tools required; builders can use equipment already on hand to cut the slot and install each fastener.
• Automatic board spacing and height alignment - nesting each successive board against the installed EB-TY ensures a consistent 3/16 in. gap and uniform height row by row, saving layout time.
• Polypropylene biscuit construction - formed from long-lasting polypropylene so the fasteners are built to last the life of the deck without corroding or degrading behind the board edge.
• Stainless-steel #7 trim-head screws included - the 305SS black-head, 6-lobe T-15 drive screws are matched to the biscuit system so no separate hardware sourcing is needed.
• Complete installation kit in one bucket - includes the EB-TY biscuit fasteners, 305SS trim-head screws, a T15 driver bit, a T20 driver bit, and #10 x 2-3/4 in. DCU 305SS fasteners for securing the starter board, so the job can start immediately.
• Fastener-free deck surface - eliminating exposed nail or screw heads makes future deck resurfacing easier and reduces tripping or snagging hazards on the finished deck.

Why This Product

• Truly invisible fastening for composite decking - because the EB-TY biscuit is inserted into the board edge rather than driven through the face, the finished deck looks seamless with no visible hardware to distract from the surface material.
• Everything needed is in the box - the bucket ships with biscuit fasteners, matching stainless-steel screws, driver bits, and starter-board fasteners, so installers are not sourcing compatible hardware separately or making mid-project trips for supplies.
• Built-in spacing control speeds up installation - the physical nesting action of each board against the installed biscuit removes the need for manual spacers, reducing layout errors and keeping courses straight over long deck runs.
• Supports easier long-term maintenance - with no screw heads penetrating the deck surface, boards can be lifted and replaced during future resurfacing without dealing with stripped face fasteners or patching screw holes in the visible field.

Specifications

• Model No.: 175-EBTYP
• Biscuit Model No.: TPO15
• Material: Polypropylene
• Color: Black
• Decking Thickness: 3/4" to 1 1/2"
• Board Spacing: 3/16"
• Packaging Type: Bucket
• Packaging Quantity: 175
• Country of Origin: United States

Approved Applications

• Decks - Deck Boards Composite

What's Included

• EB-TY polypropylene biscuit fasteners (175 qty)
• 305SS #7 trim head screws
• (1) T15 Driver Bit
• (10) #10 x 2-3/4" DCU 305SS fasteners for securing starter board
• (1) T20 Driver Bit

Frequently Asked Questions

How do EB-TY fasteners create an invisible deck surface?

The EB-TY is a biscuit fastener that fits into a slot cut into the edge of each deck board using a standard biscuit joiner. Because fastening is done into the side of the board rather than through the face, no screw heads appear on the deck surface, making the fasteners virtually invisible once the boards are installed.

What tool is needed to cut the slots for EB-TY fasteners?

A standard biscuit joiner is used to cut the slot into the edge of each deck board. The EB-TY biscuit fastener is then inserted into that slot and secured with a screw driven through the biscuit and into the joist.

How much decking can one 175-piece bucket of EB-TY fasteners cover?

Each EB-TY package includes enough EB-TY fasteners and screws to install 100 square feet of decking.

How is consistent board spacing ensured when using EB-TY fasteners?

Nesting each successive deck board against the installed EB-TY fastener automatically ensures consistent 3/16" spacing between boards and maintains uniform height across the deck surface, eliminating the need for manual spacing tools between boards.