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12 JIC CAP NUT

Description & Features

The 12 JIC Cap Nut from Brennan Industries Inc is a precision-engineered component designed for fitting applications requiring a female JIC SAE 37-degree flare. This cap nut is constructed from straight steel ensuring durability and reliability under high-pressure conditions with a maximum dynamic pressure of 5000 PSI.

Featuring a thread size of 1-1/16-12 and adhering to the SAE J514 specification it guarantees compatibility and consistent performance. The cap nut has an overall length of 0.910 mm and a hex size of 1.250 mm optimizing it for secure and efficient fitting in industrial environments.

Its compact cubic inch space of 1.422 makes it ideal for applications with limited installation space. California residents should take note of the PROP-65 warning associated with this product.

Supplier Part Number: 0304-C-12

MPN: 0304-C-12

Specifications

Brand Brennan Industries Inc	Brand Brennan Industries	Pack Size 1.00	UOM EA	Supplier Part Number 0304-C-12	Product Weight 0.19 lbs

Product Questions & Answers (2)

Question by: Floyd R on Jul 12, 2025, 12:16 PM

got a 3/4 tube line with a JIC 37 flare, is this the right cap nut for it?

Answer by: Customer Support on Jul 14, 2025, 6:49 AM

For a 3/4 tube OD JIC setup, this cap nut matches the female JIC SAE 37 degree flare style and uses 1-1/16-12 threads per SAE J514, so it lines up with that common 12 JIC connection size.

Question by: Chad H on Jul 15, 2025, 6:20 PM

Got a 3/4 inch tube line I need to cap off on a hydraulic system running around 4,500 PSI. This the right part for that?

Answer by: Customer Support on Jul 17, 2025, 12:40 PM

For a 3/4 OD tube line with a female JIC SAE 37-degree flare connection, this cap nut fits that application. It's rated to 5,000 PSI maximum dynamic pressure, so running at 4,500 PSI keeps you within the rated limit. Thread size is 1-1/16-12, which is standard for 3/4 tube OD JIC fittings, and it meets SAE J514 spec. Steel construction, so it'll hold up under normal hydraulic system conditions.