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04 FS CAP ASSEMBLY INSERT & NUT

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Description & Features

Manufactured by Brennan Industries, this cap assembly is designed for use with 1/4 inch OD tubing in FS-series hydraulic tube fittings. The 04 FS Cap Assembly Insert & Nut combines a tube nut and insert into a single assembly, providing a reliable capping solution for FS-type tube ends. The assembly features a hex dimension of 0.688 inches and an H OD of 0.502 inches, with a K length of 0.340 inches and an L dimension of 0.580 inches. These specifications conform to the Brennan FS0304-C series, making the component a precise match for compatible FS tube fitting configurations in hydraulic systems requiring a sealed tube termination.

SKU: FS0304-C-04

Supplier Part Number (MPN): FS0304-C-04

Alternate Part Numbers: 1046-1951, AFF9863-04S, FF0304-C-04

Specifications

Brand
BRENNAN
Connection Size 1
1/4 in
Connection Type
Female ORFS
Connection Type 1
SAE Female ORFS
Dimension Standards
SAE J1453
Dimensions
0.58 in L
Finish
Trivalent Zinc-Plated
Fitting Type
Insert
For Use With
FS0318 Series Nuts
Hex Size
11/16 in
Material
Steel
Material Construction
AISI 12L14/1045 Steel
Series
FS0304-C Series
Thread Size
9/16-18
Tube OD
1/4 in
Tube Outside Diameter
1/4 in

Product Questions & Answers (1)

Question by: Travis T on May 6, 2025, 7:45 PM
Hey, will this cap work on any old 1/4 inch tube, or does it have to be a Brennan fitting?
Answer by: Customer Support on May 7, 2025, 8:01 PM
Designed specifically for Brennan Industries' FS-series hydraulic tube fittings, this cap assembly is intended for 1/4 inch OD tubing within that FS system.

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