6 ORFS SWIVEL x 4 NPT FEMAL ST

Description & Features

Designed for straight-configuration hydraulic connections, the 6 ORFS Swivel x 4 NPT Female ST adapter transitions between a 11/16-16 O-ring face seal swivel end and a 1/4-18 NPTF female port. The swivel design allows for rotational adjustment during installation, reducing stress on connected lines and simplifying alignment in tight or fixed-port assemblies.

Built to the Brennan FS2405 series, this fitting measures 1.290 inches in overall length with a 0.750-inch hex for standard wrench engagement. The O-ring face seal end is sized for 3/8-inch tube OD, with a drill diameter of 0.264 inches at the sealing face. This combination of thread types is commonly used in mobile hydraulic equipment, fluid power circuits, and industrial machinery where ORFS and NPT port connections must be joined in a compact straight fitting.

SKU: FS2405-06-04

Supplier Part Number (MPN): FS2405-06-04

Alternate Part Numbers: FF2405-06-04

Specifications

Brand
BRENNAN
a Drill Dimensions
0.264 in
Connection Size 1
3/8 in
Connection Size 2
1/4 in
Connection Type
FNPT, Male ORFS
Connection Type 1
Male SAE ORFS
Connection Type 2
Female SAE NPTF
Dimension Standards
SAE J1453, SAE J476
Dimensions
1.29 in L
Finish
Trivalent Zinc-Plated
Fitting Type
Coupling
Hex Size
3/4 in
Material
Steel
Material Construction
AISI 12L14/1045 Steel
Maximum Operating Pressure
6000 psi
Operating Temperature
-40 to 250 deg F
Series
FS2405 Series
Thread Size
11/16-16, 1/4-18
Tube OD
3/8 in
Tube Outside Diameter
0.38 in

Product Questions & Answers (1)

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Question by: Patty T on Aug 6, 2025, 6:29 PM
If I'm hooking up some lines on my tractor, will this fitting handle hydraulic fluid without leaking?
Answer by: Customer Support on Aug 8, 2025, 8:11 AM
Designed to create secure hydraulic connections, this adapter uses an O-ring face seal (ORFS) on one end and a National Pipe Taper Fuel (NPTF) thread on the other, both of which are designed to prevent leaks when properly installed with hydraulic fluid.

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