APS Male To Male Steel Oil Water Brake Fuel Hose Fitting - 3/8 NPTF x 9/16 JIC

These male to male adaptors feature an AN (JIC) thread on one end and a tapered NPT or NPTF thread...

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Demon TweeksAutomotive Plumbing Solutions Male To Male Adaptor JIC - NPT / NPTF - 6 JIC To 3/8 Inch NPTF, Silver, Plated Steel, Silver
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eBayAPS 1/4 NPTF x 3/4 JIC Male To Male Steel Oil Water Brake Fuel Hose Fitting
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Product Information

Full details

This guide is for automotive enthusiasts and professionals needing to connect different thread types in fluid systems. The key benefit is a secure, reliable transition between AN (JIC) and NPT/NPTF threads, preventing leaks and ensuring system integrity. A potential caveat is ensuring thread compatibility beyond the standard AN to NPT/NPTF. These adaptors are designed for oil, water, and brake or fuel lines, manufactured from durable aluminum with anodized finishes or plated steel for corrosion resistance, offering a wide range of sizes for various applications.

All features

Model Part Number731
BrandAutomotive Plumbing Solutions

Extended Product Information

FAQs

What is the difference between NPT and NPTF threads?

NPT (National Pipe Taper) is a standard US pipe thread. NPTF (National Pipe Taper Fuel) is a dry-seal thread designed to be leak-tight without sealant, though sealant is often still recommended for best practice.

What is AN (JIC) thread?

AN (Army-Navy) threads, commonly referred to as JIC (Joint Industry Council) in industrial applications, are a standardized fitting system used in high-performance fluid and fuel lines, known for their reliable, leak-resistant seal.

Can I use these adaptors for power steering fluid?

Yes, these adaptors are suitable for a variety of automotive fluids, including power steering fluid, provided the temperature and pressure ratings are within the operational limits of the adaptor material.

How do I determine the correct size adaptor?

Identify the thread size and type (e.g., -8 JIC, 1/4 NPTF) on both components you need to connect. Select an adaptor that matches these specifications.

Are the aluminum adaptors suitable for high temperatures?

Aluminum adaptors are generally suitable for typical automotive temperatures. For extremely high-temperature applications, steel adaptors may offer better performance.

Do I need to use thread sealant with steel adaptors?

It is highly recommended to use thread sealant (PTFE tape or pipe dope) with all NPT/NPTF connections, including those made with steel adaptors, to ensure optimal leak prevention.

Troubleshooting

Leak at the NPT/NPTF connection

Ensure thread sealant or tape was used and applied correctly. Check if the NPT/NPTF threads are damaged or cross-threaded. Tighten slightly further, but avoid overtightening.

Leak at the JIC connection

Verify the JIC fitting is properly seated and tightened. Ensure the JIC fitting itself is not damaged or worn.

Fitting does not thread smoothly

Confirm you have the correct JIC and NPT/NPTF thread sizes. Do not force the connection; inspect threads on both the adaptor and the mating part for damage or debris.

Pros and Cons

Pros

  • Provides a reliable connection between different thread standards.
  • Available in corrosion-resistant materials (anodized aluminum or plated steel).
  • Offers a broad selection of thread sizes for flexibility.
  • Ensures secure fluid connections to prevent leaks.
  • Suitable for critical automotive fluid systems.

Cons

  • Requires careful thread identification to ensure correct NPT/NPTF compatibility.
  • Aluminum versions may be less suitable for extremely high-temperature or high-vibration applications compared to steel.
  • NPT threads are not self-sealing and rely on thread sealant or tape for optimal leak prevention.

Setup, Compatibility & Care

Setup: Ensure the JIC and NPT/NPTF thread sizes match the components being connected. For NPT/NPTF connections, apply a suitable thread sealant (like PTFE tape or pipe dope) to the male threads before tightening to ensure a leak-free seal. Tighten connections firmly but avoid overtightening, which can damage threads or the fitting.

Compatibility: These adaptors are designed for AN (JIC) to NPT/NPTF threads. Verify that your existing fittings and component ports use these specific thread standards. They are suitable for a wide range of automotive fluids including oil, water, brake fluid, and fuel.

Care: For aluminum adaptors, clean with mild soap and water. Avoid abrasive cleaners that could damage the anodized finish. For steel adaptors, wipe clean and inspect the plating periodically for signs of wear. Store in a dry environment when not in use.

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