---
product_id: 28474479
title: "Climax Metals 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: "€ 86.44"
currency: EUR
in_stock: true
reviews_count: 8
category: "Climax Metals"
url: https://www.desertcart.hr/products/28474479-climax-metals-rc-100-kw4h-90-black-oxide-plated-mild
store_origin: HR
region: Croatia
---

# 4 set screws for enhanced load capacity 1" bore for precise shaft fit Black oxide plating for corrosion resistance Climax Metals 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:** € 86.44
**Availability:** ✅ In Stock

## Summary

> ⚙️ Lock in power and precision — don’t let your gear fall behind!

## Quick Answers

- **What is this?** Climax Metals 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?** € 86.44 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/28474479-climax-metals-rc-100-kw4h-90-black-oxide-plated-mild)

## 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

- • **Robust Load Handling:** Four set screws maximize grip and stability under stress
- • **Effortless Installation:** Designed to install easily without major disassembly
- • **Versatile Industrial Use:** Perfect for restoring equipment or custom mechanical projects
- • **Durable Black Oxide Finish:** Resists corrosion to keep your setup running longer
- • **Precision Torque Transmission:** Engineered for flawless power transfer without slip

## Overview

The Climax Metals RC-100-KW4H@90 is a rigid coupling crafted from mild steel with a black oxide finish, featuring a 1" bore, 2" outside diameter, and 3" length. Equipped with four set screws, it ensures secure torque transmission and alignment, offering corrosion resistance and easy installation for industrial and mechanical applications.

## Description

Climax Metals 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: desertcart.com: Industrial & Scientific

Review: a lifesaver - 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
Review: Going to use as a hub on a pelton wheel. - Cut in half and will drill and tap to attach two pelton wheels on a 1 inch shaft with keyway.

## 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

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B003XHAR0K |
| Best Sellers Rank | #253,440 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #122 in Rigid Set Screw Couplings |
| Date First Available | November 5, 2013 |
| Item Weight | 1.94 pounds |
| Item model number | RC-100-KW4H@90 |
| Manufacturer | Climax Metal Products Company |
| Package Dimensions | 6.18 x 4.53 x 2.8 inches |

## Images

![Climax Metals 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)

## 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.

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

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-07-15*