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GRK Fasteners #8 x 3-1/8 RT Composite Trim Head Screws, White, 114 PCS
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GRK Fasteners #8 x 3-1/8 RT Composite Trim Head Screws, White, 114 PCS
Specially designed for attaching composite and cellular PVC materials.
GRK Fasteners #8 x 3-1/8" RT Composite Trim Head Screws, White, 114 PCS
GRK

Item #: 138530842

GRK Fasteners #8 x 3-1/8" RT Composite Trim Head Screws, White, 114 PCS

85% of respondents would recommend this to a friend

Item #: 138530842

INR 3039

INR 4007

Price Details

Price

INR 3039

M.R.P. INR 4007

Excluding Shipping & Custom charges ( Shipping and custom charges will be calculated on checkout )

*All items will import from US

24%

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us Imported from USA store

QTY:

Only 12 items left in stock.
Order now and get it around Wednesday, September 02
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Specially designed for attaching composite and cellular PVC materials.
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What Stands Out

Durable Composite
Made from high-quality composite material, ensuring exceptional strength and longevity, making it perfect for both indoor and outdoor applications where rust resistance is required.
Versatile Size
The #8 x 3-1/8 inch dimensions provide versatility for various construction projects, allowing for secure fastening in wood, drywall, and more, catering to both DIY enthusiasts and professionals.
Convenient Pack Size
Packed in a set of 100, these screws offer great value, reducing the frequency of repurchasing while ensuring you have ample supply for larger projects or ongoing repairs.

Product Details

Shop GRK Fasteners #8 x 3-1/8 RT Composite Trim Head Screws, White, 114 PCS online at a best price in India. B0B693NT1S
Thread CoveragePartially Threaded
Fastener SizeNo. 8
Size NameNo Size
Item Diameter0.15 inches (0.4 cm)
Number of Pieces100
Outside Diameter0.15 inches (0.4 cm)
BrandGRK
ColorWhite
UPC772691176349
Unit Count100 Count
Number of Packs1
Set NameGRK White RT Composite #8 X 3-1/8 in. Screws 100CT
Included ComponentsGRK White RT Composite #8 X 3-1/8 in. Screws 100CT
Item Type NameGRK White RT Composite #8 X 3-1/8 in. Screws 100CT
ManufacturerITW Brands
Model17634
Number Of Items100
Part Number17634
Screw Head StyleFlat
Screw Point StylePhillips
Head TypeFlat
Thread TypeReverse Thread
Set Screw Thread TypeReverse Thread
Thread StyleLeft Hand
Thread Classstandard
Drive SystemPhillips
Material TypeSteel
Exterior FinishPvc
Metal TypeAlloy Steel
Finish TypesUncoated (Plain Steel) with White Color
MaterialSteel
Head StyleFlat
Point StylePhillips
Item Weight2.5 lbs (1.13 kg)

What's in the box

GRK White RT Composite #8 X 3-1/8 in. Screws 100CT

Who Should Buy?

Suitable For
  • Composite Decking

    Ideal for users installing composite decking, these screws provide strong, long-lasting performance against the elements.

  • Home Builders

    Professional builders benefit from these screws' durability and corrosion resistance for constructing high-quality outdoor structures.

  • DIY Enthusiasts

    Home improvement hobbyists will find these screws easy to work with for various projects requiring reliability and strength.

Not Suitable For
  • Metal Applications

    Not suitable for metal materials; users working with metal structures should look for appropriate metal screws.

Product Description

Have any Query? Chat with us

Customer Questions & Answers

  • Question: What materials are GRK White RT Composite screws suitable for?

    Answer: GRK White RT Composite screws are designed for a variety of materials, including composite decking, plywood, and other wood products. Their specialized construction enhances performance when penetrating dense materials like composite boards, ensuring a strong hold without causing splitting. They are ideal for outdoor projects, such as building decks or fences, where durability and resistance to weather elements are essential.
  • Question: Are GRK White RT Composite screws rust-resistant?

    Answer: Yes, GRK White RT Composite screws are made with corrosion-resistant coatings that help prevent rust and degradation over time. This feature is particularly important for outdoor applications, as exposure to moisture and varying weather conditions can lead to traditional screws deteriorating faster. By using these screws in outdoor projects, you can ensure long-lasting performance even in harsh environments.
  • Question: How do I choose the right length of GRK screws for my project?

    Answer: Choosing the right screw length is crucial for secure fastening. For GRK White RT Composite screws, a 3-1/8 inch length is suitable for applications where you need to penetrate through the material and into the supporting structure beneath. It's recommended to measure the materials you'll be fastening and select screws that are long enough to ensure a tight fit without protruding excessively. For example, these screws work well for attaching composite decking to wooden joists.
  • Question: Can I use GRK White RT Composite screws for indoor applications?

    Answer: Absolutely! While these screws are engineered for outdoor use, they're also perfectly suitable for various indoor projects. Their strong grip and reliable performance make them ideal for installing cabinetry, shelving, or even for general furniture assembly. Using these screws indoors provides added strength and ensures that your installations remain stable and secure over time.
  • Question: What does the 'RT' in GRK White RT Composite screws stand for?

    Answer: 'RT' stands for 'Regular Teardrop,' which refers to the screw’s unique head design that allows for greater torque and reduced cam-out during installation. This design feature enables more efficient driving into tough materials, which is especially important when working with composite material. It provides a cleaner finish and better aesthetics, making these screws ideal for both functional and visual applications.
  • Question: What drill bit size should I use with GRK Composite screws?

    Answer: When working with GRK White RT Composite screws, it's recommended to use a drill bit size that corresponds to the screw diameter, typically a #8 bit. Pre-drilling helps prevent material splitting and allows for smoother installation. Using a smaller drill bit for the pilot hole initially is often advisable to achieve a precise fit, especially in harder materials. This ensures a strong hold and avoids damaging your project.
  • Question: Are GRK White RT Composite screws self-tapping?

    Answer: Yes, GRK White RT Composite screws feature a sharp point that allows them to self-tap into the material, eliminating the need for pre-drilling in most applications. This feature simplifies the installation process and saves time on your projects. They are particularly beneficial for fastening composite decking and other materials where speed and efficiency are key.
  • Question: How do I store GRK White RT Composite screws to ensure they last?

    Answer: To maximize the lifespan of your GRK White RT Composite screws, store them in a cool, dry environment away from moisture. Keeping them in their original container helps protect them from dust and damage. If you need to store them for an extended period, consider using airtight bins to prevent any corrosion. This proactive storage method ensures that the screws remain in optimal condition for your next project.
  • Question: What makes GRK screws different from standard screws?

    Answer: GRK screws stand out due to their specialized design features, such as the RT head shape, which enhances grip and reduces drive-out during installation. They also utilize high-quality materials and coatings that improve their performance in specific applications, particularly with composites and treated lumber. This makes them superior for construction projects compared to standard screws, which may not offer the same level of durability or holding power.
  • Question: Where can I buy GRK White RT Composite #8 X 3-1/8 in. Screws 100CT in India?

    Answer: You can purchase GRK White RT Composite #8 X 3-1/8 in. Screws 100CT from Ubuy. Ubuy is a reliable online platform that offers a wide selection of GRK products, ensuring you can find the screws you need for your projects. Their user-friendly interface and efficient service make it convenient to order and receive your screws without hassle.

GRK Wood Screws Editorial Review

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Pros

  • Strong and durable design
  • Resistant to rust and corrosion
  • Easy to drive into materials
  • Great for outdoor projects
  • Wide range of applications

Cons

  • Limited color choices available

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“Product was delivered before time. At each steps remider given time to time ,product is also good and fruitful”

3 July 2026 · via Trustpilot
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siva
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“I received the product properly packed and without any damage. If you can provide a video showing how to assemble the parts, it would be a great help. Thanks & Regards, Siva Prakash.”

16-Jul-26 · via Trustpilot
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INR 3039

INR 4007

Order now and get it around Wednesday, September 02

QTY:

Only 12 items left in stock.
Secured transactionsecured transaction

PCI DSS compliant and ISO 27001:2022 certified, with encrypted payments and full buyer protection on every order.

Our Top Logistics Partners
  • fedex
  • dhl
Fastest cross-border delivery

Features & Benefits

  • Perfect for composite and cellular PVC attachment.
  • White color offers an ideal finish for any project.
  • Underhead reverse thread reduces mushrooming.
  • Durable for both interior and exterior use.
  • #8 size with a length of 3-1/8 inches.
  • Pack of 100 screws for extensive projects.

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