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04 JIC CAP NUT

Description & Features

Crafted from straight steel the 04 JIC Cap Nut by Brennan Industries Inc boasts resilience and efficiency under high-pressure conditions. Designed for rigorous applications it accommodates a maximum dynamic pressure of up to 7 500 psi. With an overall length of 0.590 mm and a C Hex size of 0.562 mm this cap nut offers reliable performance in demanding environments.

The female JIC SAE 37-degree flare thread adhering to SAE J514 specification ensures secure and precise threading for tube OD 1/4 connections. Engineered for durability and exact fit this cap nut enhances system integrity and function.

Supplier Part Number: 0304-C-04

California Residents: PROP-65 WARNING

Specifications

Brand BRENNAN	Connection Size 1 1/4 in	Connection Type Female JIC	Connection Type 1 Female SAE JIC	Cubic Inch Space L x W x H Dimensions 0.186 cu-in	Dimension Standards SAE J514	Dimensions 0.594 in L	Finish Trivalent Zinc-Plated	Fitting Type Cap Nut	Hex Size 0.563 in	Material Steel	Material Construction 12L14/C1045 Steel	Series 0304-C Series	Thread Size 7/16-20	Tube OD 1/4 in	Tube Outside Diameter 1/4 in

Similar Products

Model Number	Connection Size 1	Thread Size	Hex Size
0304-C-02 Steel JIC Cap	1/8 in	5/16-24	3/8 in
0304-C-14 Steel JIC Cap	7/8 in	1-3/16-12	1-3/8 in
0304-C-03	3/16 in	3/8-24	7/16 in
0304-C-05	5/16 in	1/2-20	5/8 in
0304-C-06	3/8 in	9/16-18	11/16 in
0304-C-08	1/2 in	3/4-16	7/8 in
0304-C-10	5/8 in	7/8-14	1 x 1 in
0304-C-12	3/4 in	1-1/16-12	1-1/4
0304-C-16	1 in	1-5/16-12	1-1/2 in
0304-C-20	1-1/4 in	1-5/8-12	2 in
0304-C-24	1-1/2 in	1-7/8-12	2-1/4 in
0304-C-32	2 in	2-1/2-12	2-7/8 in

Product Questions & Answers (2)

Question by: Carl P on Jul 30, 2025, 9:55 PM

Reckon this cap'll hold up okay in a hydraulic system pushin' about 7,500 psi? Don't wanna get no blowouts.

Answer by: Customer Support on Aug 1, 2025, 10:11 AM

Designed to handle dynamic pressure up to 7,500 psi, this cap nut should give you reliable performance in demanding hydraulic systems.

Question by: Darryl G on Jul 28, 2025, 10:41 AM

got a 1/4 tube setup with a 37 degree flare, is this the right cap nut for that?

Answer by: Customer Support on Jul 30, 2025, 6:42 AM

For a 1/4 inch tube OD connection that uses a female JIC SAE 37 degree flare, this cap nut matches that setup. The thread spec is SAE J514 with a 7/16-20 thread (B1).

04 JIC CAP NUT

Description & Features

Specifications

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Product Questions & Answers (2)