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8 JIC STEEL CAP NUT

Brand Brennan Industries Inc	Brand Brennan Industries	Pack Size 1.00	UOM EA	Supplier Part Number 0304-C-08	Product Weight 0.08 lbs

Product Questions & Answers 3

Product Questions & Answers

got a 1/2 inch tube with a JIC 37 flare, is this the right cap nut to close it off?

Question by: Judy G on Oct 9, 2025, 7:17 PM

For a 1/2 inch tube size JIC 37 degree flare connection, this cap nut matches that setup. It uses a female JIC SAE 37 degree flare thread with a 3/4-16 thread (SAE J514), so it’s meant to cap off that size flare fitting.

Answer by: Customer Support on Oct 11, 2025, 7:13 PM

What size tubing does this cap fit, exactly? Gotta make sure I get the right one.

Question by: Floyd M on Jun 5, 2025, 1:54 PM

It's made to fit tubing with a 1/2 inch outer diameter.

Answer by: Customer Support on Jun 6, 2025, 6:39 PM

what's the max pressure rating on this cap nut, and is it gonna hold up in a hydraulic system running pretty hard?

Question by: Vince B on Dec 10, 2025, 8:43 AM

Rated at 6,000 psi maximum dynamic pressure, it's built to handle demanding hydraulic applications without issue. The straight steel construction and SAE J514-compliant female JIC 37-degree flare thread make it a solid choice for high-pressure line capping where a secure, leak-free connection is what you need.

Answer by: Customer Support on Dec 12, 2025, 6:22 AM

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