Product Description
Secure open hydraulic ports the right way with the PSC H0304-C-12 CAP NUT, #12. This steel AN/JIC-style cap nut is built to seal off unused or temporarily disconnected steering system ports, helping prevent fluid loss, contamination, and damage during service, storage, fabrication, or emergency trail repairs. Finished in zinc for corrosion resistance, the PSC H0304-C-12 is a smart addition for hydraulic steering assist systems, PSC steering gears, assist cylinders, and custom power steering plumbing setups.
PSC markets its cap nuts as a simple but highly useful way to keep fluid in and dirt out of your steering system. This #12 version is ideal for capping high-pressure ports on PSC steering gears or assist cylinders when storing components, deleting an assist ram, servicing the system, or keeping spare fittings ready for trail-side fixes.
Fitment
- Universal fit for hydraulic and steering applications using a -12 AN / 3/4" JIC cap nut connection
- Commonly used on PSC steering gears and PSC assist cylinder port connections
- Fits custom hydraulic steering, full hydraulic steering, and cylinder assist plumbing setups requiring a female-thread steel cap nut
- Ideal for off-road trucks, Jeeps, crawlers, race vehicles, and custom steering system service kits
Specifications for PSC H0304-C-12
| Specification | Details |
|---|---|
| Part Number | H0304-C-12 |
| Product Type | Cap Nut / Cap Fitting |
| Connection Size | -12 AN / 3/4" JIC |
| Thread Style | Female threads |
| Material | Steel |
| Finish | Zinc |
| UPC | 687927185227 |
| GTIN | 687927185227 |
| Shipping Info | Calculated at checkout |
| Prop 65 | May apply in California for certain automotive components. See manufacturer packaging or vehicle application requirements. |
Frequently Asked Questions
What does the PSC H0304-C-12 cap nut do?
The H0304-C-12 is used to cap off an open -12 AN / 3/4" JIC port in a hydraulic steering or fluid system, helping prevent leaks and contamination.
Is this part vehicle specific?
No. This is a universal hydraulic fitting component used by thread size and application, not by make and model fitment.
Where is this cap nut commonly used?
It is commonly used on PSC steering gears, assist cylinders, and custom steering plumbing when ports need to be sealed during service, storage, or system changes.
What material is the PSC H0304-C-12 made from?
This cap nut is made from steel and finished in zinc for strength and corrosion resistance.
Why keep one of these in a trail or shop kit?
It is useful for emergency repairs, temporary port sealing, contamination prevention, and safe storage of hydraulic steering components.
