---
product_id: 28854573
title: "National Hardware N221-341 2160BC Zinc Plated Eye Bolt with Hex Nut Included, 1/2 in x 12 in Machine Screw Threading, Industrial Grade Fastener for Home and Outdoor Applications"
brand: "national hardware"
price: "€ 15.86"
currency: EUR
in_stock: true
reviews_count: 8
category: "National Hardware"
url: https://www.desertcart.hr/products/28854573-national-hardware-n221-341-2160bc-zinc-plated-eye-bolt-hex
store_origin: HR
region: Croatia
---

# 1/2" x 12" heavy-duty size Grade 2 alloy steel strength Zinc plating for corrosion resistance National Hardware N221-341 2160BC Zinc Plated Eye Bolt with Hex Nut Included, 1/2 in x 12 in Machine Screw Threading, Industrial Grade Fastener for Home and Outdoor Applications

**Brand:** national hardware
**Price:** € 15.86
**Availability:** ✅ In Stock

## Summary

> 🔗 Secure your space with strength and style!

## Quick Answers

- **What is this?** National Hardware N221-341 2160BC Zinc Plated Eye Bolt with Hex Nut Included, 1/2 in x 12 in Machine Screw Threading, Industrial Grade Fastener for Home and Outdoor Applications by national hardware
- **How much does it cost?** € 15.86 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/28854573-national-hardware-n221-341-2160bc-zinc-plated-eye-bolt-hex)

## Best For

- national hardware enthusiasts

## Why This Product

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

## Key Features

- • **Built to Last:** Grade 2 alloy steel ensures industrial-grade durability for all your toughest fastening needs.
- • **Precision Fit:** Standard 5/16"-18 UNC machine screw threads guarantee seamless compatibility with your hardware.
- • **Complete Package:** Includes hex nut for easy installation and added security, so you’re ready to lock it down right away.
- • **Weatherproof Warrior:** Zinc plating guards against rust and corrosion, perfect for both indoor and outdoor projects.
- • **Versatile Application:** Ideal for home, farm, and industrial use—secure everything from sliding doors to heavy equipment.

## Overview

The National Hardware N221-341 2160BC Eye Bolt is a 1/2" x 12" zinc-plated, Grade 2 alloy steel fastener designed for heavy-duty indoor and outdoor applications. Featuring corrosion-resistant zinc plating and standard machine screw threads, it includes a hex nut for easy installation, making it a reliable choice for home, farm, and industrial security and fastening needs.

## Description

Product Description National Hardware N221-341 2160BC Eye Bolt in Zinc plated,1/2" x 12" From the Manufacturer Whether for home, farm, builder or industrial customers, National has all the right hardware in the sizes and finishes you need. With over a century of service National is committed to maintaining the highest level of product quality, innovation and manufacturing technology.Providing latching and fastening options for all of your indoor and outdoor uses.Barrel, Dutch door, flush, mortise and surface bolts designed with ease of use and security in mind.Zinc plating offers corrosion resistance for all of your functional hardware needs.

Review: look to be worth the money i paid - haven't used these yet but they look like quality material. heavy duty.
Review: Trying to keep the thieves out. - I finally, after 14 years have someone in the neighborhood that has sticky fingers. So I will be drilling through the wall and putting a locked chain on the sliding door just to be able to keep the bad people out

## Features

- Designed for home and industrial applications
- Hex nut included
- Standard machine screw threads
- For interior and exterior applications
- Course machine screw thread on the extra large sizes (larger than 1/2x12)

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B003A1U056 |
| Best Sellers Rank | #58,345 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #76 in Eyebolts |
| Brand | National Hardware |
| Color | Zinc Plated |
| Compatible Groove Diameter | 0.34 Inches |
| Customer Reviews | 4.7 out of 5 stars 142 Reviews |
| Exterior Finish | Zinc |
| Fastener Size | 1/2' x 12' with 5/16'-18 thread |
| Fastener Type | Eye Bolt |
| Finish Types | zinc |
| Global Trade Identification Number | 00038613123618 |
| Grade Rating | Grade 2 |
| Head Style | Flat |
| Head Type | Flat |
| Included Components | National Hardware N221-341 2160BC Eye Bolt in Zinc plated,1/2" x 12" |
| Item Diameter | 0.5 Inches |
| Item Dimensions | 13.1 x 5.3 x 2.8 inches |
| Item Hardness | Grade 2 |
| Item Type Name | Stanley National Hardware N221-341 2160BC Eye Bolt Zinc plated, 1/2" x 12" |
| Item Weight | 0.01 Ounces |
| Manufacturer | National Hardware |
| Manufacturer Grade | Grade 2 |
| Material | Alloy Steel |
| Material Type | Alloy Steel |
| Metal Type | Alloy Steel |
| Model | N221-341 |
| Number of Pieces | 1 |
| Part Number | N221-341 |
| Screw Head Style | Flat |
| Size Name | 1 Count (Pack of 1) |
| Thread Class | 2B |
| Thread Coverage | Fully Threaded |
| Thread Size | 5/16"-18 |
| Thread Style | Right Hand |
| Thread Type | Unc |
| UPC | 038613123618 |
| Unit Count | 1.0 Count |
| Warranty Description | Warranty |

## Product Details

- **Material:** Alloy Steel
- **Thread Size:** 5/16"-18
- **Exterior Finish:** Zinc
- **Manufacturer Grade:** Grade 2
- **Head Style:** Flat

## Images

![National Hardware N221-341 2160BC Zinc Plated Eye Bolt with Hex Nut Included, 1/2 in x 12 in Machine Screw Threading, Industrial Grade Fastener for Home and Outdoor Applications - Image 1](https://m.media-amazon.com/images/I/512OdOK3nUL.jpg)

## Available Options

This product comes in different **Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ look to be worth the money i paid
*by B***E on December 11, 2025*

haven't used these yet but they look like quality material. heavy duty.

### ⭐⭐⭐⭐⭐ Trying to keep the thieves out.
*by E***E on January 15, 2025*

I finally, after 14 years have someone in the neighborhood that has sticky fingers. So I will be drilling through the wall and putting a locked chain on the sliding door just to be able to keep the bad people out

### ⭐⭐⭐⭐⭐ Great as stakes in the ground
*by E***T on March 16, 2025*

Used these as stakes in the ground for a sun sail to cover my pets potty area. Perfect solution to attach sun sail ends to ground using carabiners.

## Frequently Bought Together

- National Hardware N221-341 2160BC Eye Bolt in Zinc plated,1/2" x 12"
- National Hardware 2160BC 3/8' x 8' Eye Bolt in Zinc
- National Hardware 2160BC 1/2' x 8' Eye Bolt in Zinc

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**Shop now:** [https://www.desertcart.hr/products/28854573-national-hardware-n221-341-2160bc-zinc-plated-eye-bolt-hex](https://www.desertcart.hr/products/28854573-national-hardware-n221-341-2160bc-zinc-plated-eye-bolt-hex)

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-06-19*