---
product_id: 105897570
title: "4LIFETIMELINES Brass Brake Line Union, 3/16 (M10x1.0 Inverted), 10/bag"
brand: "4lifetimelines"
price: "21839CFA"
currency: XOF
in_stock: true
reviews_count: 8
url: https://www.desertcart.sn/products/105897570-4lifetimelines-brass-brake-line-union-3-16-m10x1-0-inverted
store_origin: SN
region: Senegal
---

# M10x1.0 Inverted Durable Brass Lifetime Warranty 4LIFETIMELINES Brass Brake Line Union, 3/16 (M10x1.0 Inverted), 10/bag

**Brand:** 4lifetimelines
**Price:** 21839CFA
**Availability:** ✅ In Stock

## Summary

> 🔧 Elevate Your Brake Line Game!

## Quick Answers

- **What is this?** 4LIFETIMELINES Brass Brake Line Union, 3/16 (M10x1.0 Inverted), 10/bag by 4lifetimelines
- **How much does it cost?** 21839CFA with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sn](https://www.desertcart.sn/products/105897570-4lifetimelines-brass-brake-line-union-3-16-m10x1-0-inverted)

## Best For

- 4lifetimelines enthusiasts

## Why This Product

- Trusted 4lifetimelines brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Unmatched Quality:** Crafted from premium brass for superior durability.
- • **Generous Pack Size:** Includes 10 unions for all your project needs.
- • **Lifetime Assurance:** Enjoy peace of mind with our lifetime warranty.
- • **Corrosion Resistant:** Designed to withstand harsh winter conditions.
- • **Versatile Compatibility:** Works seamlessly with various brake line materials.

## Overview

The 4LIFETIMELINES Brass Brake Line Union (3/16 M10x1.0 Inverted) is a high-quality, corrosion-resistant solution for your brake hydraulic line applications. Each pack contains 10 durable unions, compatible with multiple materials, and backed by a lifetime warranty, ensuring reliability and performance for years to come.

## Description

4LIFETIMELINES Brass Brake Line Union, 3/16 (M10x1.0 Inverted), 10/bag

## Features

- Our 3/16 (M10x1.0 Inverted) brake line unions are made with unmatched superior quality
- 4LifetimeLines unions are made of durable brass which is resistant to corrosion from salt that can be used on roads in the winter
- Suitable for brake hydraulic line union applications
- Compatible with steel, copper nickel, copper coated steel, PVF-coated, and stainless steel replacement lines
- 4LifetimeLines provides a Lifetime warranty included on all of our products

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Size | 50 Pack |
| Material | Brass |
| Brand | 4LIFETIMELINES |
| Color | Brass |
| Item Dimensions LxWxH | 7 x 4 x 0.5 inches |
| Connector Type | Union |
| Thread Size | M10 |
| Exterior Finish | Brass |
| Thread Type | NPT |
| Number of Pieces | 10 |
| Manufacturer | 4LifetimeLines |
| Part Number | LTBU9 |
| Item Weight | 5.5 ounces |
| Product Dimensions | 7 x 4 x 0.5 inches |
| Country of Origin | USA |
| Item model number | LTBU9 |
| Is Discontinued By Manufacturer | No |
| Item Package Quantity | 10 |
| Batteries Included? | No |
| Batteries Required? | No |

## Images

![4LIFETIMELINES Brass Brake Line Union, 3/16 (M10x1.0 Inverted), 10/bag - Image 1](https://m.media-amazon.com/images/I/61DiwonWnJL.jpg)
![4LIFETIMELINES Brass Brake Line Union, 3/16 (M10x1.0 Inverted), 10/bag - Image 2](https://m.media-amazon.com/images/I/51-WY1lSXGL.jpg)
![4LIFETIMELINES Brass Brake Line Union, 3/16 (M10x1.0 Inverted), 10/bag - Image 3](https://m.media-amazon.com/images/I/612CAiPm0EL.jpg)
![4LIFETIMELINES Brass Brake Line Union, 3/16 (M10x1.0 Inverted), 10/bag - Image 4](https://m.media-amazon.com/images/I/51Ak7-Qb+IL.jpg)
![4LIFETIMELINES Brass Brake Line Union, 3/16 (M10x1.0 Inverted), 10/bag - Image 5](https://m.media-amazon.com/images/I/81h09wFh9LL.jpg)

## Questions & Answers

**Q: Will I be able to use this union for shortening a long line into two sections, 2002 Miata**
A: As long as you're comfortable cutting and flaring lines, you should be able to use this to join any lines using m10x1.0 fittings.

**Q: Are these fine thread or extra fine?**
A: Metric.

**Q: I need coupling for m10 x 1.0.  what does "m10 x 1.0 inverted" mean?**
A: Inverted "flared 16mm tube"

**Q: Is it OK to use stainless fittings with this?**
A: Yes! You can absolutely use Stainless Steel fittings with this union. And heads up, we are launching our Stainless Steel fittings program within the next month and will have a complete offering of fittings, union, and adapters in Stainless Steel.

## Customer Reviews

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Good Quality
  

*by N***Y on Reviewed in the United States on November 21, 2023*

I ended up following the old lines with out choosing to use any unions but these are pretty good quality.

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Great threads! Exact fit, no wiggle finally! Great product.
  

*by H***N on Reviewed in the United States on May 18, 2023*

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     I've been trying to find the exact 3/16 thread for a while now and finally have found it with these!Some say it's 3/16 thread, but wiggles a lot loosely. Some say pipe thread and others say compression. Make sure you get the right one.Great 10 pack for the price is spot on and quality is nice. I tightened down the threads very hard and no stripping occurred.

### ⭐⭐⭐⭐⭐ 5.0 out of 5 stars







  
  
    Best product for Mercedes brake lines
  

*by D***E on Reviewed in the United States on December 9, 2023*

DiY easy work with this item

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**Shop now:** [https://www.desertcart.sn/products/105897570-4lifetimelines-brass-brake-line-union-3-16-m10x1-0-inverted](https://www.desertcart.sn/products/105897570-4lifetimelines-brass-brake-line-union-3-16-m10x1-0-inverted)

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*Product available on Desertcart Senegal*
*Store origin: SN*
*Last updated: 2026-03-17*