Brass 3/8" MPT x 1/4" MPT Hex Nipple – Durable Brass Fitting
Brass 3/8" MPT x 1/4" MPT Hex Nipple – Durable Brass Fitting
Available in stock (101)
Couldn't load pickup availability
Get $20 off when you spend $1,000 or more! Learn more
Compact Brass Hex Nipple for 3/8" to 1/4" Connections
Brass 3/8" M x 1/4" M Hex Nipple offers a rugged, corrosion-resistant connection for high-pressure systems and fluid transfer lines. Ideal for restoration, plumbing, or equipment setups needing a quick transition between threaded male ports.
🔧 Features
- — Durable solid brass construction for extended service life
- — Compact hex body allows easy wrench-tightening in tight spaces
- — Compatible with standard 3/8" MPT and 1/4" MPT threads
- — Corrosion-resistant design prevents degradation in damp or chemical environments
✅ Advantages
- — Ensures a tight, leak-free connection for hoses and tools
- — Improves flexibility in hose setups and equipment transitions
- — Reduces the need for adapters with mismatched fittings
- — Consistent performance under high-pressure use
🎯 Benefits
- — Reliable fitting for harsh environments and frequent use
- — Prevents cross-threading and leaks with precise machining
- — Efficient upgrade or replacement for worn-out fittings
- — Compatible with common tools, hoses, and extractors
🛠 How to Use
Thread into a 3/8" female port on one end and a 1/4" female port on the other. Use a wrench on the hex body to secure without over-tightening.
📅 When to Use
Use when adapting between 3/8" and 1/4" fittings in vacuum, pump, or solution systems—especially where a durable and sealed brass connection is needed.
Upgrade your fittings with this rugged brass hex nipple for secure, leak-free performance.
📋 Technical Specs
- — Material: Solid brass
- — Thread Sizes: 3/8" MPT x 1/4" MPT
- — Design: Hex nipple
- — Use Case: Hose fittings, extractor transitions, high-pressure systems
- — Finish: Natural brass
Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

Discover more in our FAQs
How do I cancel or edit an order?
How do I cancel or edit an order?
Unfortunately, we cannot cancel orders due to a change of mind. However, we understand that mistakes happen. If you need to edit your order information, such as the delivery address or contact number, please contact our customer service as soon as possible.
Here’s what you can do:
- Contact our customer service via email address, or Live Chat.
- Have your order number ready when contacting customer service.
- We cannot guarantee changes to orders after 24 hours of placement. This is because orders may be processed once received
How can I track my order?
How can I track my order?
You can track your order by checking the shipping confirmation email, which contains a tracking number and a link to the courier's website. Alternatively, log in to your account on our website, navigate to "My Orders," and click on the tracking link provided for your order.
What if there is a problem with my order?
What if there is a problem with my order?
If there is an issue with your order, please contact our customer service team as soon as possible. You can reach us via email, phone, or through the contact form on our website. Provide your order number and a brief description of the problem so we can assist you quickly.
I didn't receive all of my order?
I didn't receive all of my order?
If part of your order is missing, please check the shipping confirmation email to see if the items were sent separately. If all items should have arrived together or if you have concerns, contact our customer service team with your order number. We’ll investigate and resolve the issue promptly.