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20FFS-12MFS ST

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Description & Features

A straight hydraulic fitting designed for reducing applications, the 20FFS-12MFS ST connects a 1-1/4" OD tube on one end to a 3/4" OD tube on the other, using 1-11/16-12 and 1-3/16-12 male face seal threads respectively. The two-piece assembly from Brennan Industries belongs to the FS2406 series and is built to handle the thread engagement and sealing demands typical of face seal hydraulic connections.

With an overall length of 1.320" and a 1.875" hex, the fitting is compact while still providing adequate wrench access for installation in tight hydraulic assemblies. The 0.609" A2 drill dimension is consistent with the 3/4" port side of the fitting. This part is well-suited for hydraulic circuits requiring a straight, inline reduction between two different tube sizes.

SKU: FS2406-20-12

Supplier Part Number (MPN): FS2406-20-12

Alternate Part Numbers: AFF2281T1220S, FF2406-20-12

Specifications

Brand
BRENNAN
2pc Assy
With Brennan 2-Piece Assembly
a2 Drill Dimensions
0.609 in
Connection Size 1
1-1/4 in
Connection Size 2
3/4 in
Connection Type
Female ORFS Swivel, Male ORFS
Connection Type 1
Female SAE ORFS Swivel
Connection Type 2
Male SAE ORFS
Dimension Standards
SAE J1453, SAE J515
Dimensions
1.85 in L
Finish
Trivalent Zinc-Plated
Fitting Type
Reducer
Hex Size
1-7/8 in
Material
Steel
Material Construction
AISI 12L14/1045 Steel
Maximum Operating Pressure
5000 psi
Operating Temperature
-40 to 250 deg F
Series
FS2406 Series
Thread Size
1-3/16-12, 1-11/16-12
Tube Outside Diameter
3/4 in

Product Questions & Answers (1)

Question by: Cheryl G on Jan 7, 2026, 6:12 PM
Reckon this would work to hook up a 1 1/4" line to a 3/4" one, runnin' hydraulic fluid? Just need a straight shot.
Answer by: Customer Support on Jan 9, 2026, 6:04 AM
Absolutely, this fitting will do the job. Designed specifically for reducing applications, it connects a 1-1/4" OD tube to a 3/4" OD tube in a straight line.

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