
10221 Comparison
| photo | price | summary | rating |
|---|---|---|---|
![]() | $240.07 | Top Pick! Condition is New, GRK GRK10217 Deck Screw,5/16",Steel,2 1/2"L,PK600 61DH71, FREE SHIPPING | ![]() |
![]() | $249.99 | Condition is New, GRK Fasteners RSS 5/16 x 3-1/8 Inch, Rugged Structural Screws, 500 PCS, Rust, FREE SHIPPING | 99.8% |
![]() | $267.68 | Top Pick! Condition is New, GRK GRK10221 Deck Screw,5/16",Steel,3 1/8"L,PK500 61DH72, FREE SHIPPING | ![]() |
![]() | $269.87 | Condition is New, GRK Fasteners-10221 772691102218 RSS Bulk 5/16-Inch by 3-1/8-Inch Screw, 500 per, FREE SHIPPING | 99.8% |
![]() | $291.78 | Condition is New, Deck Screw, 5/16 in x 3-19/64 in, Steel, Flange Round Head, Torx Drive, 500 PK, FREE SHIPPING | 99.7% |
![]() | $351.14 | Condition is New, GRK Fasteners 5/16x3-1/8 Star Washer Head Self Tapping Structural Screws, FREE SHIPPING | 100.0% |
![]() | $369.99 | Top Pick! Condition is New, Structural Screws 5/16 x 3-1/8 500 PCS Rust Resistant GRK Fasteners Inch Rugged, FREE SHIPPING | 99.1% |
| photo | price | summary | rating |
|---|---|---|---|
![]() | $60.00 | Condition is Used, GRK Fasteners 10221 Bulk 5/16-Inch by 3-1/8-Inch Screw - Box of 500, shipping cost = $29.45 | 100.0% |

Introducing the GRK Fasteners 10221 772691102218 RSS 5/16 x 3-1/8 Screw, a high-performance fastener designed for heavy-duty applications. These screws are part of GRK's RSS (Rivet Replacement Screw System) series, which offers superior strength and reliability compared to traditional rivets.
Measuring 5/16 inches in diameter and 3-1/8 inches in length, these screws are ideal for joining thick materials such as aluminum, steel, and composite materials. The thread pitch is 13 threads per inch (TPI), ensuring a strong and secure connection.
Each screw features a bright zinc coating that provides excellent corrosion resistance, making them perfect for use in harsh environments. The bright zinc finish also ensures easy identification during installation, reducing the risk of mistakes.
This particular product includes a box containing 500 pieces of the 5/16 x 3-1/8 RSS screws. Each screw is individually packaged in a clear plastic sleeve, ensuring that they remain clean and free of debris during storage and transportation. The box is well-designed and compact, making it easy to store and transport large quantities of screws.
GRK Fasteners are renowned for their quality and precision. These screws are no exception, with consistent dimensions and thread quality that ensure a reliable and secure connection every time. They are also interchangeable with GRK's other RSS screws, offering flexibility and convenience for a wide range of applications.
The GRK 10221 772691102218 RSS 5/16 x 3-1/8 Screw is an essential tool for professionals and DIY enthusiasts who demand high-strength, reliable, and corrosion-resistant fasteners for their projects. With their superior performance, ease of use, and durability, these screws offer excellent value for money and will not disappoint.
Grk Fasteners 10221 772691102218 RSS 5/16 x 3-1/8 screws are a type of fastener commonly used in construction, furniture making, and other applications where strong and reliable joining is required. Here are some pros and cons of buying this particular product:
Pros:1. High-strength steel: These screws are made of SAE 4130 alloy steel, which provides excellent tensile strength and durability.
2. Thread form: The RSS thread form provides superior holding power and resistance to shear forces.
3. Coating: The zinc plating on these screws provides corrosion resistance, making them suitable for use in various environments.
4. Large quantity: Buying a 500-piece box is cost-effective and convenient for large projects.
Cons:1. Size: These screws have a larger size (5/16 inch) and length (3-1/8 inches), which may not be suitable for all applications.
2. Strip screws: Since they come in a bulk box, there is a risk of stripping screws if not installed correctly or using the wrong tool.
3. Cost: While buying in bulk is cost-effective, the individual unit price may be higher than buying smaller quantities.
Conclusion:Grk Fasteners 10221 772691102218 RSS 5/16 x 3-1/8 screws are an excellent choice for applications requiring high-strength and corrosion-resistant fasteners. Their large quantity makes them cost-effective for large projects. However, their larger size and potential for stripping screws are disadvantages that should be considered before making a purchase.
Recommendation:If your project requires the specifications of these screws, it is recommended to buy them in a 500-piece box to save costs. Ensure that you have the proper installation tools to prevent stripping screws. Additionally, consider whether the larger size and potential for stripping screws are acceptable for your project before making a purchase.
Details:
The round head with built-in shield washer type head has no sharp edges like conventional lag screws. The sharp threads and points bite instantly into material including hardwood, reducing the splitting effect due to smaller shanks. The Grk rss screw is a great lag alternative. For products that have been opened and/or used please refer to manufacturer warranty information.
These costs are separate from any shipping charges.
specifications yofastener:
- brand: Grk Fasteners
- mpn: 10221
- item length: 10.500
- type: Collated Screws
payments yofastener:
- credit card: visa
- wallet: apple-pay
- other
general yofastener:
- category: Home & Garden > Building Hardware > Nails, Screws > Fasteners
seller yofastener:
- rating: 99.7%
- # reviews: 17262
- city: minneapolis, minnesota
returns yofastener:
- method: money back
- time: 30 days
- policy: returns accepted
- paid by: seller
offer yofastener:
- started: may 2, 2025
- availability: in stock
- options: ship-to-home
- prices: $60.00–$369.99
- item condition:
- New
- Used
- sold #: 17
shipping yofastener:
- class: standard
- transit: 4-7 days
- service: standard
- type: fixed
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