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Hidden Deck Fasteners for Composite Deck Boards - 9.5mm / 0.374" Groove Height - Heavy Duty Black Stainless Steel - Includes Drill Bit and Composite Deck Screws to Attach Deck Clips

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Availability: In Stock.
Fulfilled by Amazon

Arrives Tuesday, Apr 28
Order within 8 hours and 1 minute
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Size: 0.374"


Material Type: Stainless 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.

Features

  • Durable and Weather-Resistant: Made from high-quality black-coated galvanized or stainless steel, these clips are built to last and withstand the elements.
  • Variety of Sizes: With groove depths of 6.5mm (0.255"), 8.5mm (0.334"), or 9.5mm (0.374") our clips fit just about any deck board.
  • Seamless Look: Our 3-4mm (3/16" - 1/4") board gap creates a seamless look and feel for your deck.
  • Easy Installation: Each package includes 50x hidden fasteners, 50x stainless steel screws (3.9x20 mm, T15), and 1x drill bit for hassle-free installation.
  • Coverage: Calculating the number of clips required for your deck is simple - use 10 clips per square meter or 1 clip per square foot.

Description

Choose your materialIntroducing our high-quality Hidden Deck Fasteners, designed to make the installation of your deck boards quick and easy. Available in two materials, black-coated galvanized steel or black-coated stainless steel, these clips are built to withstand the elements and provide lasting durability.Suitable for a variety of composite deck boardsBased the manufacturer and model of your deck boards, choose between three different groove heights: 6.5mm (0.255"), 8.5mm (0.334"), and 9.5mm (0.374"). The 3-4mm (0.118 - 0.157") board gap provides a near seamless look while providing ample space for your deck boards to expand and contract with changes in temperature and humidity.What to expectEach package contains 50 clips, 50 stainless steel screws (3.9x20 mm, T15), and a drill bit to ensure hassle-free installation. With a coverage ratio of 10 clips per square meter (1 clip per square foot), you can easily calculate the number of clips you need for your deck project.Build easyUpgrade your deck with our hidden fasteners today and enjoy a long-lasting, hassle-free outdoor space from Frueh Building Systems.


Size: 0.374"


Color: Black


Material: Stainless Steel


Brand: Früh Building Systems


Item Dimensions LxWxH: 1.85 x 1.46 x 0.39 inches


Manufacturer: ‎Frueh Building Systems


Part Number: ‎4250-04-2


Product Dimensions: ‎1.85 x 1.46 x 0.39 inches


Country of Origin: ‎Germany


Size: ‎0.374"


Color: ‎Black


Material: ‎Stainless Steel


Number Of Pieces: ‎50


Included Components: ‎Drill Bits


Batteries Included?: ‎No


Batteries Required?: ‎No


Date First Available: September 7, 2023


Size: 0.374"


Color: Black


Material: Stainless Steel


Brand: Früh Building Systems


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


Size Name: 0.374"


Item Dimensions: 1.85 x 1.46 x 0.39 inches


Item Diameter: 9.5 Millimeters


Number of Pieces: 50


Screw Head Style: Square


Thread Size: 3.9


Compatible Groove Diameter: 9.5 Millimeters


Grade Rating: commercial


Maximum Shear Strength: High


Color: Black


Item Shape: Rectangular


Brand: Früh Building Systems


Fastener Type: Square


Global Trade Identification Number: 39


Manufacturer: Frueh Building Systems


Item Type Name: Hidden Deck Fastener


Included Components: Drill Bits


Unit Count: 50.0 Count


Material Type: Stainless Steel


Finish Types: Black Phosphate


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Apr 28

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


  • Best tight gap clips for composite deck boards
Size: 0.374" Material Type: Stainless Steel
I have spent hours and hours researching deck spacing clips trying to find something in the 1/8 inch spacing instead of the 1/4 inch spacing for Deckorator composite decking boards. The vast majority of the clips are 1/4 inch with screws that show between the boards. I tried one brand that advertised a 3/32 inch space, but the clips were too wide when fitting into the grooves of the boards and did not allow the proper gapping. So I tried this FRUH German design and it worked perfectly. The 1/8 inch gapping is a much nicer look and the screws do not show between the boards. Plus, the stainless steel will out live the plastic competitors by many years. ... show more
Reviewed in the United States on July 24, 2025 by Masked Crusader

  • Much better than plastic!
Size: 0.374" Material Type: Stainless Steel
Worked perfectly for installing composite deck boards, much higher quality than the plastic ones offered at the hardware store.
Reviewed in the United States on September 20, 2025 by Dave

  • The Trex size
Size: 0.374" Material Type: Stainless Steel
The Trex size worked well. They space just short of 3/16 inch. Screws are short but there is no need for longer.
Reviewed in the United States on August 17, 2025 by da Yooper

  • Superior quality and simple to install
Size: 0.255" Material Type: Stainless Steel
I’ve been building for 16 years and recently decided to tackle my own deck project at home. After a lot of research, I chose these hidden deck fasteners because they’re metal—far superior to the standard plastic ones that often crack or degrade over time. I started decking this weekend, and I couldn’t be more impressed. These fasteners are a breeze to install, and the quality is evident as soon as you handle them. They’re sturdy, well-designed, and make the process smooth and efficient. If you’re looking for durability and ease of use, these are worth every penny! ... show more
Reviewed in the United States on December 1, 2024 by Jon

  • Not enough screws, not long enough, poor customer service.
Size: 0.374" Material Type: Stainless Steel
Limited # of screws, cant find longer screws, or buy ones that fit at a hardware store. Emailed company twice asking for guidance or a link to buy more screws or longer screws and did not get a reply. Would have just gone with the camo system or another clip system with recessed holes in the clips.
Reviewed in the United States on November 24, 2025 by Logan Woo

  • Work good
Size: 0.374" Material Type: Stainless Steel
Work good - good price
Reviewed in the United States on September 30, 2024 by steve

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