Compressors and accessories
APEX 3/8 Hose to 1/4 NPT Male Fitting with Aluminium Cover Nut
An APEX fitting that adapts a 3/8" APEX Hose to a 1/4 NPT male thread. It comes with an aluminium cover nut that protects the hose end and tidies up the whole connection. It is also suitable for higher-temperature applications, such as a connection to an air compressor.
APEX 3/8 Hose to 1/4 NPT Male Fitting with Aluminium Cover Nut
At the compressor the hose has the hardest life: heat, vibration and constant reconnecting.
This fitting was made for that spot - it adapts APEX 3/8 hose to a male 1/4 NPT thread, and the manufacturer lists it for higher-temperature applications such as air compressors.
PORT 1 APEX 3/8 hose | PORT 2 Male 1/4 NPT thread | COVER NUT Aluminium, included |
Key benefits
- adapts APEX 3/8 hose to a male 1/4 NPT thread - the standard the rest of the pneumatic world speaks
- an aluminium cover nut is included, tidying and protecting the hose end
- the manufacturer lists it for higher-temperature applications such as air compressors
What is in the box
- APEX 3/8 hose to 1/4 NPT male fitting
- aluminium cover nut

Technical data
- Manufacturer part number: X02-11-015
- Port 1: APEX 3/8 hose
- Port 2: male 1/4 NPT thread
- Cover nut: aluminium, supplied with the fitting
- Application: also for higher-temperature applications such as air compressors
Who it is for
For anyone connecting APEX hose to a compressor or other 1/4 NPT hardware - especially where the hose end works in heat and benefits from being covered.
Installation and notes
The manufacturer does not state the body material or a specific temperature range - only that the fitting suits higher-temperature applications. We therefore quote no figures that are not in the source.
Frequently asked questions
Is the cover nut included?
Yes. The manufacturer states the fitting comes with an aluminium cover nut.
Will it fit a compressor?
The manufacturer lists higher-temperature applications such as air compressors. The port is a male 1/4 NPT thread - check that your hardware has a female 1/4 NPT socket.
How does it differ from the cheaper cover-nut version?
APEX offers several 3/8 to 1/4 NPT fittings under separate part numbers. This one, X02-11-015, is described by the manufacturer as the version with an aluminium cover nut, also intended for work at elevated temperature.
Why it is worth it
- a hose end protected by an aluminium cover nut rather than left bare
- a genuine APEX Designs and Performance Products part
Not sure which 1/4 NPT fitting suits your compressor? Get in touch and we will check.