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Hidden Deck Fasteners for Composite Deck Boards – 6.5mm / 0.255" Groove Height - Heavy Duty Black Galvanized Steel - Includes Drill Bit and Composite Deck Screws to Attach Deck Clips

  • Based on 26 reviews
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Availability: In Stock.
Fulfilled by Frueh Building Systems

Arrives Oct 28 – Nov 3
Order within 6 hours and 18 minutes
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Size: 0.255"


Material Type: Galvanized Steel


Features

  • THREE SIZES: With groove depths of 6.5mm (0.255"), 8.5mm (0.334"), and 9.5mm (0.374"), Frueh composite deck fasteners fit a variety of composite decking boards. See cross reference grid in images.
  • GALVANIZED or STAINLESS STEEL - NOT PLASTIC: Made from high-quality black-coated galvanized or stainless steel, these hidden deck fasteners for composite decking are built to last and will not crack or break during installation.
  • NARROW GAP: The 3-4mm (3/16" - 1/4") board gap creates a seamless look and feel for your deck. Use in tandem with Frueh deck board spacers to give your composite deck an extra professional look.
  • EASY INSTALLATION: Each package includes 50x hidden deck clips, 50x stainless steel screws (3.9x20 mm, T15), and 1x drill bit for hassle-free installation of your composite deck boards.
  • MADE IN GERMANY: These heavy duty composite decking fasteners are made in Germany with US-based customer service. We are quick to respond and answer any questions you may have.

Description

Frueh Building Systems offers a wide variety of German engineered hidden fasteners for decks, walls, and ceilings. Frueh Hidden Deck Fasteners are the perfect complement to grooved composite decking without unsightly nails or screws. Frueh Building Systems in Milwaukee, Wisconsin traces its roots back to Frueh Schnellbautechnik in Neckartenzlingen, Germany, where they have been developing and manufacturing hidden fastening systems for over 40 years. Drawing on its forty plus years of manufacturing experience, Frueh is uniquely positioned to offer a wide variety of hidden fasteners for both contractors and do-it-yourselfers.

Size: 0.255"


Color: Black


Material: Galvanized Steel


Brand: Früh Building Systems


Item dimensions L x W x H: 1.85 x 1.46 x 0.39 inches


Size Name: 0.255"


Item Dimensions: 1.85 x 1.46 x 0.39 inches


Number of Pieces: 50


Screw Head Style: Square


Thread Size: 3.9mm x 20mm


Compatible Groove Diameter: 6.5 millimeters


Color: Black


Item Shape: Square


Material Type: Galvanized Steel


Finish Types: Black-coated


Brand: Früh Building Systems


Fastener Type: Square


Unit Count: 50 Count


Number Of Items: 50


Number of Packs: 1


Set Name: Hidden Deck Fastener Set


Manufacturer: Frueh Building Systems


Included Components: Drill Bits


Item Type Name: Hidden Deck Fastener


Item Weight: 0.77 kg


Model: 6WPC


Part Number: 6WPC


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Oct 28 – Nov 3

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


  • Absolute best hidden fasteners for Trex deck!
Size: 0.255" Material Type: Galvanized Steel
I spent hours researching and ordering like ten different hidden fasteners, because I didn't like the Trex hidden fastener, the gap was too large between the planks (3/16" to 1/4"). So I tried out all the ones I bought and this Fruh one is hands down the best, sturdy, solid construction, easy to install, and the gap is half the size, about 1/8" (between 3-4mm) which looks so much nicer on my deck. No worries of kids fingers getting stuck or high heels tripping because of the gap. Water can still go down easily and the deck can breathe so mold won't grow (if there is no gap, then that could happen). I saved you a lot of time, trust me, if you are looking for a smaller gap than Trex, you found your fastener. Remember to choose the taller one for Trex, 8.5mm high fits the grooved edge perfectly. ... show more
Reviewed in the United States on August 11, 2023 by funNtheSun

  • great for trex boards
Size: 0.374" Material Type: Galvanized Steel
Why did you pick this product vs others?: worked as i wanted to get the gap smaller for the trex decking boards. had to get new screws however since the screws supplied are so short.
Reviewed in the United States on June 21, 2025 by Andrew M.

  • Useless product. Not really needed
Size: 0.255" Material Type: Galvanized Steel
Will not buy again
Reviewed in the United States on June 9, 2025 by New user

  • Just what I needed, high quality!
Size: 0.334" Material Type: Galvanized Steel
Great product. I wasn't sure how well the included bit would work, but it had a nice tight fit with the screw and didn't slip out when I was screwing in the fasteners. These hidden fasteners have a firm hold and don't leave much of a gap between the boards, which is fantastic.
Reviewed in the United States on January 24, 2024 by Austin White

  • Happy with Cost and Quality
Size: 0.374" Material Type: Galvanized Steel
We were debating on redoing a wood deck to composite for a non profit. Cost was a factor and was holding us up on doing the project. We were happy to find these clips here as they cut our cost nearly in half from in-store prices. I used these with TimberTech grooved boards and they fit correctly and can get tight against the groove. It takes more than one person to do a great job holding the board tight while securing the next row of fasteners. So I would definitely recommend also buying the spacers they sell. Which are pretty cheap for a pack of 20. Agree with others that one per joist is definitely a requirement unless you have incredibly level joists. Otherwise due to the flex in composite decking you will hear it slap the joist while walking on the place you didn't put a fastener. ... show more
Reviewed in the United States on February 29, 2024 by Jared

  • Screws Not enough or long enough
Size: 0.374" Material Type: Galvanized Steel
Like the clips but screws are too short and you don't get enough so have to go buy screws from hardware store. Also you can't get them in bulk quantity which makes them very expensive. If I did not start with them I would have gone with a different brand that provides quantity, longer screws and more screws. ... show more
Reviewed in the United States on February 9, 2025 by Missy

  • Adaptable.
Size: 0.374" Material Type: Galvanized Steel
I needed to put hidden fasteners between a channeled and rounded deck board, where the usual "c" fastener wouldn't work, as I needed to install the board and then secure the fastener. I was able to install these and hammer down the single bracket on the unused side so I could put the rounded edge board on top of it. ... show more
Reviewed in the United States on December 16, 2024 by Matt

  • PERFECT FIT!
Size: 0.374" Material Type: Galvanized Steel
Excellent hidden deck fasteners. Since they offer three sizes, I measured the bottom groove thickness and matched it to the next taller clip. Perfect fit and super sturdy clips.
Reviewed in the United States on January 26, 2024 by Tommy Boy

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