Midland Brass Compression Nut for Tube Fittings
The Midland brass compression nut secures a compression sleeve (ferrule) and tube to a compression fitting body, creating a reliable, reusable seal without soldering or flaring. Machined from solid brass, it is built for low- and medium-pressure connections on copper, aluminum, and thermoplastic tubing and is a staple repair and assembly part for air, fluid, and instrumentation lines.
Key specifications
- Material: Solid brass
- Type: Compression nut (for standard compression fittings)
- Tube sizes: 1/8" through 1" tube OD (select size at checkout)
- Compatible tubing: Copper, aluminum, brass, and plastic (plastic requires an insert). Not recommended for steel tubing.
- Temperature range: -65°F to +250°F (-53°C to +121°C) at maximum operating pressure
- SAE rating: SAE# 060110
- Conformance: Meets applicable ASA, ASME, and SAE standards
- Vibration resistance: Fair — use a long-pattern nut where greater vibration resistance is required
- Note: These nuts are not lead free and are not recommended for gaseous media.
Tube size, thread & working pressure
| Tube OD | Thread Size | Working Pressure (73°F) | SKU |
|---|---|---|---|
| 1/8" | 5/16-24 | 400 PSI | BCC-033 |
| 3/16" | 3/8-24 | 400 PSI | BCC-034 |
| 1/4" | 7/16-24 | 300 PSI | BCC-035 |
| 5/16" | 1/2-24 | 300 PSI | BCC-036 |
| 3/8" | 9/16-24 | 200 PSI | BCC-037 |
| 7/16" | 5/8-24 | 200 PSI | BCC-038 |
| 1/2" | 11/16-20 | 200 PSI | BCC-039 |
| 5/8" | 13/16-18 | 150 PSI | BCC-040 |
| 3/4" | 1-18 | 100 PSI | BCC-041 |
| 7/8" | 1-1/8-18 | 75 PSI | BCC-042 |
| 1" | — | — | BCC-043 |
Typical applications
Compression nuts are used throughout air compressor plumbing, pneumatic controls, instrumentation, fuel and oil lines, HVAC/R, and general fluid-transfer assemblies — anywhere a serviceable, leak-resistant tube connection is needed without soldering or flaring. Keep common sizes on hand for fast field repairs and new builds.
This solid-brass Midland compression nut pairs with a matching brass ferrule and fitting body to deliver a dependable compression seal on copper, aluminum, and plastic tubing from 1/8" to 1" OD, meeting applicable SAE, ASME, and ASA standards for low- and medium-pressure service.
NOTE: Actual product may be different from pictured!
Financing Options
Financing Options
We offer Financing Through Many Different Avenues:
- Affirm is great for smaller purchases. You can do this during checkout.
- Clicklease is a great option for Instant decisions up to 25k. NO Hard credit pull. No Time in Business Required. More information can be found out about it here: https://www.clicklease.com/partner/warthog-air-compressor-store
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