---
product_id: 28474479
title: "RC-100-KW4H@90 Black Oxide Plated Mild Steel Rigid Coupling, 1\" Bore, 2\" Outside Diameter, 3\" Length, 5/16\"-18 x 1/2\" Set Screw"
brand: "climax metals"
price: "€ 61.91"
currency: EUR
in_stock: true
reviews_count: 8
url: https://www.desertcart.ie/products/28474479-rc-100-kw4h-90-black-oxide-plated-mild-steel-rigid
store_origin: IE
region: Ireland
---

# 3" length ensures robust connection 4 set screws for max load grip 1" bore for precise fit RC-100-KW4H@90 Black Oxide Plated Mild Steel Rigid Coupling, 1" Bore, 2" Outside Diameter, 3" Length, 5/16"-18 x 1/2" Set Screw

**Brand:** climax metals
**Price:** € 61.91
**Availability:** ✅ In Stock

## Summary

> ⚙️ Lock in power and precision with every turn!

## Quick Answers

- **What is this?** RC-100-KW4H@90 Black Oxide Plated Mild Steel Rigid Coupling, 1" Bore, 2" Outside Diameter, 3" Length, 5/16"-18 x 1/2" Set Screw by climax metals
- **How much does it cost?** € 61.91 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ie](https://www.desertcart.ie/products/28474479-rc-100-kw4h-90-black-oxide-plated-mild-steel-rigid)

## Best For

- climax metals enthusiasts

## Why This Product

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

## Key Features

- • **Enhanced Load Capacity:** 4 strategically placed set screws boost reliability
- • **Compact Yet Durable Design:** 1" bore with 2" OD balances strength and space-saving
- • **Corrosion-Resistant Finish:** Black oxide plating guards against wear and rust
- • **Quick, No-Fuss Installation:** Fits seamlessly without major disassembly downtime
- • **Precision Torque Transmission:** Engineered for flawless power transfer and alignment

## Overview

The RC-100-KW4H@90 is a black oxide plated mild steel rigid coupling featuring a 1" bore, 2" outside diameter, and 3" length. Designed for efficient torque transmission and alignment, it includes 4 set screws (5/16"-18 x 1/2") to maximize load capacity. Its corrosion-resistant finish and easy installation make it a cost-effective, durable solution for demanding mechanical connections.

## Description



## Features

- Provides torque transmision and alignment
- Cost effective coupling design
- Easily installed where major disassembly would otherwise be required
- 4 set screws increase load capacity
- Black oxide provides some corrosion resistance

## Images

![RC-100-KW4H@90 Black Oxide Plated Mild Steel Rigid Coupling, 1" Bore, 2" Outside Diameter, 3" Length, 5/16"-18 x 1/2" Set Screw - Image 1](https://m.media-amazon.com/images/I/51brLEzAX+L.jpg)
![RC-100-KW4H@90 Black Oxide Plated Mild Steel Rigid Coupling, 1" Bore, 2" Outside Diameter, 3" Length, 5/16"-18 x 1/2" Set Screw - Image 2](https://m.media-amazon.com/images/I/714vWIDSHZL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ a lifesaver
*by S***1 on October 13, 2023*

made and old DR lawn-vac live again after many try's with flex couplings this seems to have fixed the power transfer issue this one will not come apart like those did should last and work now Thanks for a great product

### ⭐⭐⭐⭐⭐ Going to use as a hub on a pelton wheel.
*by A***. on April 19, 2022*

Cut in half and will drill and tap to attach two pelton wheels on a 1 inch shaft with keyway.

### ⭐⭐⭐⭐⭐ High quality part.
*by J***E on August 20, 2020*

Well made good allen head screws just what i needed. I recommend coating screw threads and inside of this sleeve with never seize in case it needs to come apart later.

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.ie/products/28474479-rc-100-kw4h-90-black-oxide-plated-mild-steel-rigid](https://www.desertcart.ie/products/28474479-rc-100-kw4h-90-black-oxide-plated-mild-steel-rigid)

---

*Product available on Desertcart Ireland*
*Store origin: IE*
*Last updated: 2026-03-05*