---
product_id: 82012232
title: "GRK Fasteners 12221 RSS 5/16\" x 3-1/8\" Screws 100CT"
brand: "grk"
price: "RM614"
currency: MYR
in_stock: true
reviews_count: 13
url: https://www.desertcart.com.my/products/82012232-grk-fasteners-12221-rss-5-16-x-3-1-8
store_origin: MY
region: Malaysia
---

# 5/16" size Self-tapping Code approved GRK Fasteners 12221 RSS 5/16" x 3-1/8" Screws 100CT

**Brand:** grk
**Price:** RM614
**Availability:** ✅ In Stock

## Summary

> 🔧 Screw it, get it done with style!

## Quick Answers

- **What is this?** GRK Fasteners 12221 RSS 5/16" x 3-1/8" Screws 100CT by grk
- **How much does it cost?** RM614 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.my](https://www.desertcart.com.my/products/82012232-grk-fasteners-12221-rss-5-16-x-3-1-8)

## 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

- • **Versatile Use:** Perfect for both interior and exterior applications.
- • **Code Compliant:** Rest easy knowing these screws are code approved for structural wood fastening.
- • **Durable Design:** Crafted from high-quality alloy steel for unmatched strength.
- • **Paintable Finish:** Customize your projects with a paintable exterior finish!
- • **Fast Installation:** Experience the ease of one-step installation with the Fast Bite Tip!

## Overview

The GRK 5/16" x 3-1/8" Fasteners 12221 RSS Screws come in a pack of 100, designed for easy installation and structural integrity. Made from durable alloy steel with a climate-resistant finish, these screws are perfect for both indoor and outdoor projects, ensuring a reliable hold every time.

## Description

GRK Fasteners 12221 RSS 5/16" x 3-1/8" Screws 100CT

## Features

- Easy to install lag alternative for structural wood to wood fastening
- Code approved for structural wood to wood applications
- For interior/exterior use
- Fast Bite Tip provides a fast start for one-step installation

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Material | Steel |
| Drive System | Torx |
| Head Style | Round |
| Item Dimensions LxWxH | 14 x 4 x 4 inches |
| Exterior Finish | Climatek |
| Thread Size | 5/16" |
| Metal Type | Alloy Steel |
| Brand | GRK |
| Color | Gold |
| Head Type | Washer |
| Item Weight | 3.5 Pounds |
| Thread Coverage | Partially Threaded |
| Fastener Type | self-tapping |
| Thread Style | Right Hand |
| Fastener Size | 5/16" x 3-1/8" |
| Size | 5/16" x 3-1/8" |
| Manufacturer | GRK |
| Part Number | 772691122216 |
| Item Weight | 3.52 pounds |
| Product Dimensions | 14 x 4 x 4 inches |
| Item model number | 772691122216 |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 1 |
| Measurement System | Imperial |
| Special Features | Paintable |
| Included Components | GRK Fasteners 12221 RSS 5/16" x 3-1/8" Screws 100CT |
| Batteries Included? | No |
| Batteries Required? | No |
| Warranty Description | Guaranteed against manufacturer defects |

## Images

![GRK Fasteners 12221 RSS 5/16" x 3-1/8" Screws 100CT - Image 1](https://m.media-amazon.com/images/I/71iIahO89RL.jpg)
![GRK Fasteners 12221 RSS 5/16" x 3-1/8" Screws 100CT - Image 2](https://m.media-amazon.com/images/I/61EP0hcZhjL.jpg)
![GRK Fasteners 12221 RSS 5/16" x 3-1/8" Screws 100CT - Image 3](https://m.media-amazon.com/images/I/71wLgRtA2eL.jpg)
![GRK Fasteners 12221 RSS 5/16" x 3-1/8" Screws 100CT - Image 4](https://m.media-amazon.com/images/I/51S2jjtDSSL.jpg)
![GRK Fasteners 12221 RSS 5/16" x 3-1/8" Screws 100CT - Image 5](https://m.media-amazon.com/images/I/61fhOLCUV+L.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    High quality
  

*by D***A on Reviewed in the United States on November 14, 2023*

Good screws at a good price

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    More convenient than using lag bolts
  

*by J***D on Reviewed in the United States on July 2, 2019*

I bought these to use for installing components on a wooden swing set..  They are the "cats meow!"  So much easier and neater than lags.  The holding power is awesome!  Which I would have tried them sooner.

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Lag screws.
  

*by M***D on Reviewed in the United States on September 3, 2023*

Used these to build heavy duty sawhorses with the ability to replace the top work surface with ease!

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**Shop now:** [https://www.desertcart.com.my/products/82012232-grk-fasteners-12221-rss-5-16-x-3-1-8](https://www.desertcart.com.my/products/82012232-grk-fasteners-12221-rss-5-16-x-3-1-8)

---

*Product available on Desertcart Malaysia*
*Store origin: MY*
*Last updated: 2026-02-11*