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GRK 12221 5/16x3-1/8 Star Drive Washer Head Climatek Coated Steel RSS Rugged Structural Screws, 200/Box
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GRK 12221 5/16x3-1/8 Star Drive Washer Head Climatek Coated Steel RSS Rugged Structural Screws, 200/Box
GRK 12221 5/16x3-1/8 Star Drive Washer Head Climatek Coated Steel RSS Rugged Structural Screws, 200/Box
GRK

Item #: 221119344

GRK 12221 5/16x3-1/8 Star Drive Washer Head Climatek Coated Steel RSS Rugged Structural Screws, 200/Box

87% of respondents would recommend this to a friend

Item #: 221119344

SHP 109

Price Details

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*All items will import from US

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Order now and get it around Thursday, September 24
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What Stands Out

Rugged Structure
Designed for heavy-duty applications, these screws offer exceptional strength and durability, ensuring reliable performance in structural framing and decking tasks.
Rust Resistant
The Climatek™ coating protects against rust and corrosion, making these screws ideal for both interior and exterior use in varying weather conditions.
Fast Bite Tip
Equipped with a fast bite tip and star drive, these screws provide superior grip and reduced cam-out, allowing for quick installation and enhanced ease of use.

Product Details

Shop GRK 12221 5/16x3-1/8 Star Drive Washer Head Climatek Coated Steel RSS Rugged Structural Screws, 200/Box online at a best price in Saint Helena. B001PD2NYW

Who Should Buy?

Suitable For
  • Professional Contractors

    Ideal for contractors engaged in heavy-duty framing and decking projects requiring reliable, high-strength screws.

  • Outdoor Projects

    Perfect for outdoor applications due to rust-resistant coating, ensuring durability and longevity in various climates.

  • DIY Enthusiasts

    Great for DIY projects needing secure fastening, with easy handling and fast bite tip for user-friendly installation.

Not Suitable For
  • Lightweight Projects

    Not suitable for lightweight or temporary projects where less robust fastening options can be used instead.

Product Description

GRK 12221 5/16x3-1/8 Star Drive Washer Head Climatek Coated Steel RSS Rugged Structural Screws, 200/Box

About This Item

Introducing the GRK 772691102256 RSS Bulk 516-Inch by 4-Inch Screw – the ultimate solution for all your construction and woodworking needs. When it comes to fasteners, GRK is a name you can trust. These high-quality screws are designed to provide exceptional performance and durability, making them the top choice for both professionals and DIY enthusiasts.

Whether you're working on a cabinet installation, deck construction, or any other interior or exterior project, these GRK screws are the perfect choice. Their self-tapping design makes installation a breeze, saving you time and effort. One of the standout features of these screws is their heavy-duty construction.

Made from corrosion-resistant materials, they are designed to withstand even the harshest weather conditions, ensuring a long-lasting and reliable hold. With their multi-purpose design, these screws are suitable for a wide range of applications. From securing wooden beams to fastening metal brackets, these screws can handle it all.

Invest in the best, invest in GRK. With their reputation for excellence and commitment to quality, you can trust that these screws will exceed your expectations. Don't compromise on performance – choose GRK for all your fastening needs.

Order your GRK 772691102256 RSS Bulk 516-Inch by 4-Inch Screw today and experience the difference for yourself.

Have any Query? Chat with us

Customer Questions & Answers

  • Question: What are GRK FASTENERS 10225 10225 RSS 516 x 4 SCREWS made of?

    Answer: GRK FASTENERS 10225 10225 RSS screws are constructed from high-quality steel, ensuring durability and strength. This material choice provides excellent resistance to corrosion, making them ideal for both indoor and outdoor projects. Their rust-resistant coating further enhances longevity, making these screws suitable for woodwork, decking, and other construction applications.
  • Question: What is the length and diameter of these screws?

    Answer: The GRK FASTENERS 10225 screws are 4 inches long with a diameter of 5/16 inch. This size combination makes them versatile for various fastening tasks, including securing decking boards or attaching heavy framework. The length ensures a secure hold without being overly intrusive in thinner materials, making them an excellent choice for multiple construction scenarios.
  • Question: Can these screws be used for concrete applications?

    Answer: While the GRK FASTENERS 10225 screws are primarily designed for wood applications, they can be used in conjunction with wall anchors for concrete projects. This combination allows for effective fastening in concrete surfaces, especially in framing and structural projects, where additional support is needed. Be sure to select suitable anchors to enhance compatibility.
  • Question: What projects are ideal for GRK FASTENERS 10225 screws?

    Answer: These screws are perfect for a wide range of projects, including decking, fencing, cabinetry, and general construction. Their strong grip and rust-resistant features provide stability in outdoor settings, making them ideal for building patios or garden structures. Home improvement enthusiasts and contractors alike will find these screws essential for reliable and sturdy assembly.
  • Question: What type of drive do these screws use?

    Answer: GRK FASTENERS 10225 screws feature a Star or Torx drive design, which helps prevent cam-out and ensures a secure fit with the driver. This design allows for easier handling, especially in tight spaces where precision is critical. Using the appropriate Torx bit can significantly enhance torque transfer, making installation more efficient.
  • Question: Are these screws treated for outdoor use?

    Answer: Yes, GRK FASTENERS 10225 screws are treated with a special coating that offers excellent resistance to rust and weathering. This makes them suitable for various outdoor applications, from decks to fence installations. Using these screws outdoors ensures a longer-lasting and durable hold against environmental elements.
  • Question: What is the packaging size of these screws?

    Answer: Each box of GRK FASTENERS 10225 screws contains 400 count screws. This bulk packaging is clearly advantageous for larger projects, as it minimizes the need for frequent purchases and ensures you have enough fasteners on hand for completion. Ideal for contractors and DIY enthusiasts, purchasing in bulk can also lead to greater efficiency in project timelines.
  • Question: What makes GRK FASTENERS unique compared to other brands?

    Answer: GRK FASTENERS are known for their innovative design features, which include a unique thread design that provides superior holding power and a sharp point for easier penetration into materials. Additionally, their specialized coatings enhance durability and corrosion resistance relative to many generic screws. These features cater specifically to professional-grade requirements in construction.
  • Question: Can I use these screws in high moisture areas?

    Answer: Absolutely, due to their corrosion-resistant coating, GRK FASTENERS 10225 screws are suitable for high moisture environments, such as areas near pools or coastal locations. They excel in projects where exposure to water is a concern, such as outdoor furniture or marine applications, ensuring longevity and structural integrity under challenging conditions.
  • Question: Where can I buy GRK FASTENERS 10225 10225 RSS 516 x 4 SCREWS 400CT?

    Answer: You can purchase GRK FASTENERS 10225 10225 RSS 516 x 4 SCREWS 400CT from Ubuy, which operates in Saint Helena. Ubuy offers a streamlined shopping experience with a variety of fasteners available to meet your needs, making it a reliable choice for any construction or DIY project.

GRK Collated Screws Editorial Review

GRK Fasteners RSSTM 5/16 x 3-1/8" Rugged Structural Framing Screws, 100 PCS are engineered for structural applications providing remarkable tensile strength, making them a favored choice among builders. Reviewers highlight their exceptional ability to quickly and securely drive into various materials without the need for pre-drilling, thanks to the innovative CEE Thread design that allows for impressive pull-out strength compared to traditional lag bolts. Users appreciate how easily they function with battery-powered impact drivers, coupled with a T30 star drive for increased torque efficiency. Many have switched from lag bolts to these screws, citing improved safety and speed during installation, making them an excellent investment for both professionals and DIY enthusiasts.

Customer Reviews & Ratings

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Pros

  • EXTRA strong with impressive tensile strength
  • No pilot hole required for easy use
  • Quick and easy installation with impact drivers
  • CEE Thread design enhances grip and security
  • Versatile for various applications including decking

Cons

  • Some users reported receiving fewer screws than expected

Platform Trust & Buyer Confidence

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Jasmin
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“Great products and very good service: very easy and very fast international delivery.”

9 September 2026 · via Trustpilot
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10 September 2026 · via Trustpilot
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“I received exactly what I ordered I was skeptical about your site because that was my first time to order. But the order came timely and neatly packaged. I was not disappointed. Thank you.”

11 September 2026 · via Trustpilot
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“Easy to find and order what you want on the website. Delivery is quick to the UK”

8 September 2026 · via Trustpilot
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Important information

  • Limitations : For products shipped internationally, please note that any manufacturer warranty may not be valid; manufacturer service options may not be available; product manuals, instructions, and safety warnings may not be in destination country languages; the products (and accompanying materials) may not be designed in accordance with destination country standards, specifications, and labeling requirements; and the products may not conform to destination country voltage and other electrical standards (requiring use of an adapter or converter if appropriate). The recipient is responsible for assuring that the product can be lawfully imported to the destination country. When ordering from Ubuy or its affiliates, the recipient is the importer of record and must comply with all laws and regulations of the destination country.
  • Not all the products listed on Ubuy are for sale, as Ubuy is a global search engine. Products are subject to export/trade regulations.

SHP 109

Order now and get it around Thursday, September 24

QTY:

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