---
product_id: 19501299
title: "RC-037 Black Oxide Plated Mild Steel Rigid Coupling, 3/8\" Bore, 3/4\" Outside Diameter, 1\" Length, 1/4\"-20 x 3/16\" Set Screw"
brand: "climax metals"
price: "€ 16.39"
currency: EUR
in_stock: true
reviews_count: 8
category: "Climax Metals"
url: https://www.desertcart.pt/products/19501299-rc-037-black-oxide-plated-mild-steel-rigid-coupling-3
store_origin: PT
region: Portugal
---

# Tight tolerance ±0.0005/±0.0025 Precision torque transmission Black oxide corrosion resistance RC-037 Black Oxide Plated Mild Steel Rigid Coupling, 3/8" Bore, 3/4" Outside Diameter, 1" Length, 1/4"-20 x 3/16" Set Screw

**Brand:** climax metals
**Price:** € 16.39
**Availability:** ✅ In Stock

## Summary

> ⚙️ Lock in power and precision — don’t let your machinery miss a beat!

## Quick Answers

- **What is this?** RC-037 Black Oxide Plated Mild Steel Rigid Coupling, 3/8" Bore, 3/4" Outside Diameter, 1" Length, 1/4"-20 x 3/16" Set Screw by climax metals
- **How much does it cost?** € 16.39 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/19501299-rc-037-black-oxide-plated-mild-steel-rigid-coupling-3)

## 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

- • **Compact yet robust dimensions:** 3/8" bore and 1" length fit tight spaces without compromise
- • **Quick, hassle-free installation:** Saves time by avoiding major disassembly
- • **Built to last with black oxide plating:** Enhanced corrosion resistance for extended durability
- • **Engineered for flawless torque transfer:** Ensures seamless power flow with rigid coupling design
- • **Precision fit with ultra-tight tolerances:** Maintains perfect alignment for optimal performance

## Overview

The RC-037 Black Oxide Plated Mild Steel Rigid Coupling delivers precise torque transmission with a 3/8" bore and 1" length, featuring black oxide plating for corrosion resistance and ultra-tight tolerances (+.0005/+.0025) for perfect shaft alignment. Designed for easy installation, it’s the cost-effective solution trusted by professionals for reliable, long-lasting performance.

## Description

Climax Metals RC-037 Black Oxide Plated Mild Steel Rigid Coupling, 3/8" Bore, 3/4" Outside Diameter, 1" Length, 1/4"-20 x 3/16" Set Screw: Rigid Shaft Coupling: desertcart.com: Industrial & Scientific

Review: The best for the price - Works great. The price was reasonable and the build quality was exceptional. Would buy again when needed.
Review: Perfect size and fit - Clamps down very good. Nice fit and function.Arrived faster than expected. Would buy from them again.

## Features

- Provides torque transmision and alignment
- Cost effective coupling design
- Easily installed where major disassembly would otherwise be required
- Tolerance: +.0005/+.0025
- Black oxide provides some corrosion resistance

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Customer Reviews | 4.6 out of 5 stars 150 Reviews |

## Images

![RC-037 Black Oxide Plated Mild Steel Rigid Coupling, 3/8" Bore, 3/4" Outside Diameter, 1" Length, 1/4"-20 x 3/16" Set Screw - Image 1](https://m.media-amazon.com/images/I/71By3t2HzzL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ The best for the price
*by A***R on May 12, 2024*

Works great. The price was reasonable and the build quality was exceptional. Would buy again when needed.

### ⭐⭐⭐⭐⭐ Perfect size and fit
*by K***T on September 23, 2023*

Clamps down very good. Nice fit and function.Arrived faster than expected. Would buy from them again.

### ⭐⭐⭐⭐⭐ 3/8" Shaft Couplers
*by K***Y on March 24, 2024*

These will work perfectly to connect a steel shaft to a 3/8" motor armature.

## Frequently Bought Together

- Climax Metals RC-037 Black Oxide Plated Mild Steel Rigid Coupling, 3/8" Bore, 3/4" Outside Diameter, 1" Length, 1/4"-20 x 3/16" Set Screw
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**Shop now:** [https://www.desertcart.pt/products/19501299-rc-037-black-oxide-plated-mild-steel-rigid-coupling-3](https://www.desertcart.pt/products/19501299-rc-037-black-oxide-plated-mild-steel-rigid-coupling-3)

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*Product available on Desertcart Portugal*
*Store origin: PT*
*Last updated: 2026-11-01*