---
product_id: 278092187
title: "National Hardware N222-471 2193BC U Bolt in Stainless Steel"
brand: "national hardware"
price: "R520"
currency: ZAR
in_stock: true
category: "National Hardware"
url: https://www.desertcart.co.za/products/278092187-national-hardware-n222-471-2193bc-u-bolt-in-stainless-steel
store_origin: ZA
region: South Africa
---

# 300 Series Stainless Steel Rustproof 0.31" Compatible Groove Diameter Grade 8 Steel Strength National Hardware N222-471 2193BC U Bolt in Stainless Steel

**Brand:** national hardware
**Price:** R520
**Availability:** ✅ In Stock

## Summary

> 🔧 Lock in strength and style with rustproof reliability!

## Quick Answers

- **What is this?** National Hardware N222-471 2193BC U Bolt in Stainless Steel by national hardware
- **How much does it cost?** R520 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/278092187-national-hardware-n222-471-2193bc-u-bolt-in-stainless-steel)

## 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

- • **Precision Fit:** Designed with Unified National Coarse (UNC) threading, perfectly tailored for US-standard applications—no metric hassles.
- • **Unmatched Durability:** Grade 8 steel ensures maximum shear strength up to 60 ksi for heavy-duty fastening.
- • **Versatile Application:** Ideal for automotive, plumbing, marine, and industrial projects—engineered to perform wherever you need it.
- • **Complete Fastening Kit:** Includes plate and nuts for a secure, ready-to-install solution on pipes, wood, and more.
- • **Marine-Grade Corrosion Resistance:** Crafted from 300 series stainless steel with 18% chromium for unbeatable rust protection in outdoor and marine environments.

## Overview

The National Hardware N222-471 U Bolt is a premium-grade, stainless steel fastening solution engineered for durability and corrosion resistance. Featuring Grade 8 steel strength and UNC threading, it’s designed for seamless installation on pipes and wood in demanding environments including marine and industrial settings. Complete with plate and nuts, this rust-free U bolt delivers professional-grade performance for a wide range of applications.

## Description

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. Utilizing 300 series stainless steel with 18% chromium, which gives the corrosion protection as pure chromium in chrome plating. These products will not corrode or rust when exposed to the weather.

## Features

- Authorized Replacement for Stanley Hardware Stock #N222-471
- Designed for fastening products to pipe, wood, etc
- Suitable for automotive, plumbing and other home and industrial applications
- Plate and nuts included
- Excellent for marine and other outdoor applications

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000BPK8F6 |
| ASIN  | B000BPK8F6 |
| Brand | National Hardware |
| Color | Stainless Steel |
| Compatible Groove Diameter | 0.31 Inches |
| Customer Reviews | 4.4 4.4 out of 5 stars (258) |
| Customer reviews | 4.4 4.4 out of 5 stars (258) |
| Date First Available  | 16 August 2012 |
| Exterior Finish | Zinc |
| Fastener Type | U Bolt |
| Finish Types | Stainless Steel |
| Global Trade Identification Number | 00038613191440 |
| Grade Rating | Grade 2 |
| Is Discontinued By Manufacturer  | No |
| Item Dimensions | 14.2 x 10.2 x 2.5 centimeters |
| Item Hardness | Grade 5 |
| Item Highlight | Rust-Free Stainless for Marine and Outdoor Mounting to Pipe or Wood; Plate and Nuts Included |
| Item Type Name | Stanley National Hardware N222-471 2193BC U Bolt in Stainless Steel, 5/16" x 2-1/2" x 5" |
| Item Weight | 0.02 Pounds |
| Item model number  | N222-471 |
| Manufacturer | National Hardware |
| Manufacturer  | National Hardware |
| Manufacturer Grade | Grade 8 |
| Material Type | Steel |
| Maximum Shear Strength | 50-60 ksi (345-414 MPa) |
| Metal Type | Stainless Steel |
| Model | N222-471 |
| Number Of Items | 1 |
| Number of Packs | 1 |
| Number of Pieces | 1 |
| Outside Diameter | 0.31 Inches |
| Part Number | N222-471 |
| Product Dimensions  | 14.22 x 10.16 x 2.54 cm; 9.07 g |
| Screw Head Style | Cupped |
| Set Screw Thread Type | Unified National Coarse (UNC) |
| Size Name | #546-5/16"x2-1/2"x5" |
| Thread Class | 1A |
| Thread Style | Right Hand |
| Thread Type | UNC |
| UPC | 038613191440 |
| Unit Count | 1 Count |

## Product Details

- **Colour:** Stainless Steel
- **Exterior finish:** Zinc
- **Head style:** Cupped
- **Manufacturer grade:** Grade 8
- **Material:** Steel

## Images

![National Hardware N222-471 2193BC U Bolt in Stainless Steel - Image 1](https://m.media-amazon.com/images/I/61LAi0LgmQL.jpg)

## Available Options

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

## Questions & Answers

**Q: What is the thread size so that I can order extra nuts?**
A: 5/16-18 (course). Fine thread would be 5/16-24. Checked with a thread gage and confirmed 5/16-18

**Q: Is there a link for a u bolt to fit a 1-3/4" od pipe, and long enough to go through 4x4 lumber and allowing for bolts and a little xtra room?**
A: No, I've used it supporting cat5 to at giant tent in a industrial setting on 2'' conduit

**Q: What would be the one for a 6" pvc pipe?**
A: I purchased a 2” for a 2”pipe and it fit perfectly. I assume you would therefor need a 6”

**Q: Can you please send a direct link for the u bolt that will fit around the 4”pvc pipe ?**
A: https://www.amazon.com/National-Hardware-N222-174-2190BC-plated/dp/B000BPRP8Y/ref=psdc_16409751_t2_B000BPK8F6

## Frequently Bought Together

- National Hardware N222-471 2193BC U Bolt in Stainless Steel
- Hillman 3002 5/16-18-Inch Stainless Steel Wing Nut, 4-Pack

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*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-11-13*