---
product_id: 722063436
title: "5/16 inch Stainless Steel 304 Compression Fitting for tube, connect air line brass pipe, adapt copper brake hose water fuel system (2 pcs)"
brand: "horiznext"
price: "€ 29.57"
currency: EUR
in_stock: true
reviews_count: 9
category: "Horiznext"
url: https://www.desertcart.hr/products/722063436-5-16-inch-stainless-steel-304-compression-fitting-for-tube
store_origin: HR
region: Croatia
---

# 1000 PSI Max Pressure 304 Stainless Steel Durability -100 to +660°F Temp Range 5/16 inch Stainless Steel 304 Compression Fitting for tube, connect air line brass pipe, adapt copper brake hose water fuel system (2 pcs)

**Brand:** horiznext
**Price:** € 29.57
**Availability:** ✅ In Stock

## Summary

> 🔧 Connect with Confidence — The Ultimate Compression Fitting for Pros Who Demand More

## Quick Answers

- **What is this?** 5/16 inch Stainless Steel 304 Compression Fitting for tube, connect air line brass pipe, adapt copper brake hose water fuel system (2 pcs) by horiznext
- **How much does it cost?** € 29.57 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/722063436-5-16-inch-stainless-steel-304-compression-fitting-for-tube)

## Best For

- horiznext enthusiasts

## Why This Product

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

## Key Features

- • **Universal Compatibility:** Seamlessly connects stainless steel, copper, rigid, and semi-rigid tubing for versatile applications.
- • **Quick Connect & Disconnect:** Hex nut design ensures tight, leak-proof seals with easy assembly and disassembly—no fuss, no leaks.
- • **Extreme Temperature Tolerance:** Operates flawlessly from freezing -100°F to scorching +660°F without compromise.
- • **Built to Last with 304 Stainless Steel:** Heavy-duty corrosion resistance for long-term reliability in demanding environments.
- • **Pressure-Ready for High-Stakes Systems:** Handles up to 1000 PSI, perfect for fuel, air, and water lines under pressure.

## Overview

This 5/16 inch compression fitting by Horiznext is crafted from premium 304 stainless steel, engineered to connect and extend metal tubing with a robust working pressure of up to 1000 PSI. Designed for professional-grade applications, it withstands extreme temperatures from -100 to +660°F and fits stainless steel, copper, rigid, and semi-rigid tubes. Its hex nut construction guarantees secure, leak-free connections that can be assembled or disassembled repeatedly, making it an essential component for fuel, air, water, and industrial systems.

## Description

Product description What for ? The Horiznext compression tube fitting is made of type 304 stainless steel and connects to tubing on both ends. This union fitting is for connecting and disconnecting two pipes more easily than couplings. What it is like ? This fitting is made of 304 stainless steel for higher strength and good performance. This fitting has hex nut construction for tighter connections. It is compatible with stainless steel, copper, rigid and semi-rigid tubing, but is not recommended for soft tubing. It is suitable for use in petroleum, power generation, laboratory, and medical device plants. Our technical specification Material: stainless steel 304 Size: 3/8" , 1/2", 5/16", 3/16"，1/8” Length: 1.85 inches, 1.77 inches. The work pressure can reach： 1000 psi Working Temperature: -100 to +660 degrees ℉

Review: BAD REVIEWS ARE FROM PEOPLE THAT DON'T UNDERSTAND WHAT THIS FITTING IS FOR - Please disregard the negative reviews regarding this item not fitting or threads being wrong. Those reviews were left by people that do not understand what this fitting is for. This is a union fitting to allow you to connect to a 5/16 outer diameter (0.3125" or 8mm) metal tube. You slide the nut onto the tube. Then you slide the smaller ferrule onto the tube. Then you slide the bigger, cone-shaped ferrule onto the tube. Then you push the tube into the fitting. Then you slide the nut down the tube and begin tightening it onto the fitting. The tightening process will wedge the ferrules together - and crimp them like crazy onto the tube. You can then assemble or disassemble the joint as often as you like. Be aware the ferrules will be permanently crimped onto the tube - and the nut won't be able to be removed from the tube. Do not use on plastic or teflon tubing. This is for steel/stainless/aluminum tubing only. I suppose it would probably work on copper, but these fittings rely on your tubing being nice and round - and stiff enough to take the crimping process. They work great and can handle tens of thousands of psi of pressure.
Review: Good quality - Had to customize 5/16 fuel line and this compression fitting allowed it to work. No leaks

## Features

- Made of stainless steel 304, heavy duty and durable.
- Used to connect 5/16" outer diameter tube
- Fittings for connecting and extending stainless steel, copper, rigid and semi-rigid tubing
- The working pressure can reach 1000 psi
- Temperature range from -100 to +660 degrees ℉

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0DRN791Y9 |
| Best Sellers Rank | #61,963 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #2,292 in Pipe Fittings |
| Brand | Horiznext |
| Brand Name | Horiznext |
| Color | Stainless Steel |
| Connector Type | Union |
| Customer Reviews | 4.5 out of 5 stars 260 Reviews |
| Exterior Finish | Stainless Steel |
| Included Components | fittings |
| Item Dimensions | 1.8 x 1.4 x 0.6 inches |
| Item Weight | 0.1 Kilograms |
| Item dimensions L x W x H | 1.8 x 1.4 x 0.6 inches |
| Manufacturer | Horiznext |
| Material | Stainless Steel |
| Material Type | Stainless Steel |
| Number of Pieces | 2 |
| Set Name | 2 |
| Size | 5/16 inch 2pcs |
| Thread Size | 1.9 inch |
| Unit Count | 2.0 Count |

## Product Details

- **Size:** 5/16 inch 2pcs
- **Material:** Stainless Steel
- **Brand:** Horiznext
- **Color:** Stainless Steel
- **Item dimensions L x W x H:** 1.8 x 1.4 x 0.6 inches
- **Exterior Finish:** Stainless Steel
- **Manufacturer:** Horiznext

## Images

![5/16 inch Stainless Steel 304 Compression Fitting for tube, connect air line brass pipe, adapt copper brake hose water fuel system (2 pcs) - Image 1](https://m.media-amazon.com/images/I/416yU1-Dg5L.jpg)
![5/16 inch Stainless Steel 304 Compression Fitting for tube, connect air line brass pipe, adapt copper brake hose water fuel system (2 pcs) - Image 2](https://m.media-amazon.com/images/I/51YsvhpX-6L.jpg)
![5/16 inch Stainless Steel 304 Compression Fitting for tube, connect air line brass pipe, adapt copper brake hose water fuel system (2 pcs) - Image 3](https://m.media-amazon.com/images/I/51KJpnVs9aL.jpg)
![5/16 inch Stainless Steel 304 Compression Fitting for tube, connect air line brass pipe, adapt copper brake hose water fuel system (2 pcs) - Image 4](https://m.media-amazon.com/images/I/61QFZ3aDO9L.jpg)
![5/16 inch Stainless Steel 304 Compression Fitting for tube, connect air line brass pipe, adapt copper brake hose water fuel system (2 pcs) - Image 5](https://m.media-amazon.com/images/I/61s4WkbNN1L.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ BAD REVIEWS ARE FROM PEOPLE THAT DON'T UNDERSTAND WHAT THIS FITTING IS FOR
*by T***4 on April 15, 2022*

Please disregard the negative reviews regarding this item not fitting or threads being wrong. Those reviews were left by people that do not understand what this fitting is for. This is a union fitting to allow you to connect to a 5/16 outer diameter (0.3125" or 8mm) metal tube. You slide the nut onto the tube. Then you slide the smaller ferrule onto the tube. Then you slide the bigger, cone-shaped ferrule onto the tube. Then you push the tube into the fitting. Then you slide the nut down the tube and begin tightening it onto the fitting. The tightening process will wedge the ferrules together - and crimp them like crazy onto the tube. You can then assemble or disassemble the joint as often as you like. Be aware the ferrules will be permanently crimped onto the tube - and the nut won't be able to be removed from the tube. Do not use on plastic or teflon tubing. This is for steel/stainless/aluminum tubing only. I suppose it would probably work on copper, but these fittings rely on your tubing being nice and round - and stiff enough to take the crimping process. They work great and can handle tens of thousands of psi of pressure.

### ⭐⭐⭐⭐⭐ Good quality
*by D***K on February 23, 2026*

Had to customize 5/16 fuel line and this compression fitting allowed it to work. No leaks

### ⭐⭐⭐⭐⭐ Well made great value
*by J***S on November 13, 2024*

We used these for an oiler to our chain driven over. The couplings worked great. No leaks

## Frequently Bought Together

- Horiznext 5/16 inch Stainless Steel 304 Compression Fitting for tube, connect air line brass pipe, adapt copper brake hose water fuel system (2 pcs)
- Vigorous Stainless Steel Tubing Coil, 3/8" x 25Ft 304 Stainless Steel Tubing, Welded Stainless Steel Tubing

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-07-29*