---
product_id: 237987747
title: "GRK Fasteners RSS™ 5/16 x 4 Rugged Structural Screws, SS 305, 45 PCS"
brand: "grk"
price: "€ 165.59"
currency: EUR
in_stock: true
reviews_count: 6
category: "Grk"
url: https://www.desertcart.fi/products/237987747-grk-fasteners-rss-5-16-x-4-rugged-structural-screws
store_origin: FI
region: Finland
---

# 305 stainless steel coastal-grade rust resistance 3x faster install w/ Zip-Tip tech ICC-ES ESR-2442 structural code approved GRK Fasteners RSS™ 5/16 x 4 Rugged Structural Screws, SS 305, 45 PCS

**Brand:** grk
**Price:** € 165.59
**Availability:** ✅ In Stock

## Summary

> 🔩 Build faster, stronger, and smarter with GRK RSS – the pro’s choice for rugged structural perfection!

## Quick Answers

- **What is this?** GRK Fasteners RSS™ 5/16 x 4 Rugged Structural Screws, SS 305, 45 PCS by grk
- **How much does it cost?** € 165.59 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.fi](https://www.desertcart.fi/products/237987747-grk-fasteners-rss-5-16-x-4-rugged-structural-screws)

## Best For

- grk enthusiasts

## Why This Product

- Trusted grk brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **W-Cut Thread Design:** Reduces driving torque by 40%, ensuring smoother, faster installation with less effort and minimal wood splitting.
- • **Zip-Tip™ Tech for Speed:** Skip pre-drilling and install 3x faster than lag screws, saving you time on every project.
- • **Coastal-Grade Stainless Steel:** Premium 305 stainless steel resists rust and corrosion, perfect for high-moisture environments like docks and pool decks.
- • **Code-Approved Structural Strength:** Engineered and ICC-ES ESR-2442 approved for heavy-duty framing and multi-ply beams—built to last and pass inspection.
- • **Star/Torx Drive with 6-Point Contact:** Prevents stripping and wobble, delivering professional-grade precision and durability on every screw.

## Overview

The GRK RSS 5/16 x 4 Rugged Structural Screws are premium 305 stainless steel fasteners designed for heavy-duty wood framing and decking. Featuring patented Zip-Tip™ technology, these screws install up to 3x faster without pre-drilling, while their ICC-ES ESR-2442 code approval guarantees structural reliability. Coastal-grade corrosion resistance and a W-Cut thread design reduce torque and prevent wood splitting, making them ideal for demanding outdoor projects. The star drive head ensures no stripping, delivering professional precision and durability in every pack of 45 screws.

## Description

The GRK RSS Rugged Structural Wood Screw is a professional-grade fastener designed for heavy-duty framing, decking, and construction projects. These premium screws deliver superior performance in applications, including deck building, timber framing, laminated beams, pole barns. GRK’s stainless steel screws, provide superior corrosion resistance, making these construction screws ideal for applications exposed to corrosive environments. Use 305 stainless steel screws for applications such as pool decking, docks, boardwalks, and lake piers. The patented Fast Bite Tip and Zip-Tip™ technology eliminates the need for pilot holes, while the W-Cut™ design ensures smooth, low-torque driving in all wood types. ICC-ES ESR-2442 approved for structural applications, these self-drilling screws are trusted by professional builders and DIYers alike. The star drive head with 6-points of contact prevents cam outs and head stripping, making these wood screws the choice for demanding construction and home improvement projects.

Review: Perfect for deck framing! Not a single bad one in the box! - Using these GRK RSS 305 stainless 5/16"x4" screws for framing my new deck. They're working great! I've been predrilling holes to ensure the wood doesn't split, especially near the ends of boards, since wood has been very expensive this summer. A 1/8" predrill hole seems to work very well. With a guide hole these screws drive in very nicely and they seem amazingly strong (the code compliance test data from GRK agrees). I've been using a battery powered impact driver to drive these in. So far I've used one entire box and am half way through my second box. Every single screw has been perfect. Not a single one had defects. In previous deck projects I've experienced about 1% of each box of screws would have unusable screws due to improper coating or other defects, but these GRK screws have been great in that regard, I think because they're not coated. I had considered using Simpson Strong-Tie SDWS SS framing screws for my framing, but decided on these GRK instead due to cost. I did buy some of the Simpson screws for some aspects of the deck but only a small number where my town said they must be used. The Simpson screws are MUCH larger diameter and much heavier duty, but feel like they'd really be overkill for normal framing. I'm glad I went with these GRK.
Review: Excellent outdoor fastener - If you've never tried the GRK fasteners you don't know what you are missing. The screw in *very* easily and are very strong. I have yet to break one while screwing it in, can't say the same for deck screws I've used. Being stainless is also great for outdoor projects since you don't have to worry about them getting rusty looking.

## Features

- Heavy Duty Lag Screw Alternative: Eliminates pre-drilling in most woods with Zip-Tip technology. Installs 3x faster than traditional lag screws
- ESR-2442 Code Approved For Structural Applications: Engineered for professional-grade connections in heavy duty framing, multi-ply beams, and timber framing. Integrated washer head delivers maximum clamping force for zero-gap joints in LVL, LSL, and engineered lumber.
- Coastal Grade: Rust resistant stainless steel provides extra durability for high moisture environments such as pool decking, docks, boardwalks, etc.
- W-cut Thread Design: Reduces installation torque by 40% for smoother, faster driving. CEE threads minimize splitting in dense hardwoods, engineered lumber, and laminated beams.
- Precision Engineering: Star/Torx drive recess with 6 points of contact prevents stripping and minimizes wobble between screws and bits.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07Z5CYG3L |
| Best Sellers Rank | #82,762 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #771 in Wood Screws |
| Brand | GRK |
| Color | 305 Stainless |
| Compatible Groove Diameter | 0.31 inches |
| Customer Reviews | 4.6 out of 5 stars 21 Reviews |
| Drive System | Torx |
| Exterior Finish | 305 Stainless |
| Fastener Size | 5/16" x 4" |
| Fastener Type | Self-Tapping Screw |
| Finish Types | Stainless Steel |
| Global Trade Identification Number | 00092097622258 |
| Grade Rating | Premium |
| Head Style | Washer Head |
| Head Type | Washer |
| Included Components | Structural Screws |
| Item Diameter | 0.31 inches |
| Item Dimensions | 2.5 x 3.5 x 6.75 inches |
| Item Type Name | Structural Screws |
| Item Weight | 2.4 ounces |
| Item dimensions L x W x H | 2.5 x 3.5 x 6.75 inches |
| Manufacturer | GRK |
| Material | Stainless Steel |
| Material Type | Stainless Steel |
| Metal Type | Stainless Steel |
| Model | 62225 |
| Number Of Items | 40 |
| Number of Pieces | 40 |
| Outside Diameter | 0.31 inches |
| Part Number | 62225 |
| Point Style | Type G Point |
| Screw Head Style | Washer Head |
| Screw Point Style | Type G Point |
| Set Name | 40-Piece Set |
| Set Screw Thread Type | Aggressive |
| Size Name | 5/16" x 4" |
| Thread Class | Standard |
| Thread Coverage | Partially Threaded |
| Thread Size | 5/16" x 4" |
| Thread Style | Right Hand |
| Thread Type | Aggressive |
| UPC | 092097622258 |
| Unit Count | 40 Count |

## Images

![GRK Fasteners RSS™ 5/16 x 4 Rugged Structural Screws, SS 305, 45 PCS - Image 1](https://m.media-amazon.com/images/I/617VSb9QfLL.jpg)
![GRK Fasteners RSS™ 5/16 x 4 Rugged Structural Screws, SS 305, 45 PCS - Image 2](https://m.media-amazon.com/images/I/81nxpi1j41L.jpg)
![GRK Fasteners RSS™ 5/16 x 4 Rugged Structural Screws, SS 305, 45 PCS - Image 3](https://m.media-amazon.com/images/I/719+sTdUiiL.jpg)
![GRK Fasteners RSS™ 5/16 x 4 Rugged Structural Screws, SS 305, 45 PCS - Image 4](https://m.media-amazon.com/images/I/713lEA8RyFL.jpg)
![GRK Fasteners RSS™ 5/16 x 4 Rugged Structural Screws, SS 305, 45 PCS - Image 5](https://m.media-amazon.com/images/I/71+eXJ9mkAL.jpg)

## Available Options

This product comes in different **Size, Number Of Items** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Perfect for deck framing! Not a single bad one in the box!
*by A***W on September 10, 2021*

Using these GRK RSS 305 stainless 5/16"x4" screws for framing my new deck. They're working great! I've been predrilling holes to ensure the wood doesn't split, especially near the ends of boards, since wood has been very expensive this summer. A 1/8" predrill hole seems to work very well. With a guide hole these screws drive in very nicely and they seem amazingly strong (the code compliance test data from GRK agrees). I've been using a battery powered impact driver to drive these in. So far I've used one entire box and am half way through my second box. Every single screw has been perfect. Not a single one had defects. In previous deck projects I've experienced about 1% of each box of screws would have unusable screws due to improper coating or other defects, but these GRK screws have been great in that regard, I think because they're not coated. I had considered using Simpson Strong-Tie SDWS SS framing screws for my framing, but decided on these GRK instead due to cost. I did buy some of the Simpson screws for some aspects of the deck but only a small number where my town said they must be used. The Simpson screws are MUCH larger diameter and much heavier duty, but feel like they'd really be overkill for normal framing. I'm glad I went with these GRK.

### ⭐⭐⭐⭐⭐ Excellent outdoor fastener
*by K***N on January 17, 2024*

If you've never tried the GRK fasteners you don't know what you are missing. The screw in *very* easily and are very strong. I have yet to break one while screwing it in, can't say the same for deck screws I've used. Being stainless is also great for outdoor projects since you don't have to worry about them getting rusty looking.

### ⭐⭐⭐⭐⭐ These anchors are fantastic!
*by B***. on November 30, 2023*

These anchors work great. They are hard enough that they don’t strip out. No pilot hole needed

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*Product available on Desertcart Finland*
*Store origin: FI*
*Last updated: 2026-08-18*