04MP-04FFSS STRAIGHT

Description & Features

A straight hydraulic adapter from Brennan Industries, the 04MP-04FFSS Straight connects a 1/4-18 male pipe thread to a 9/16-18 female face seal port in a compact, inline configuration. With an overall length of 1.520 inches and a hex size of 0.688 inches across the body, it is sized for tight installation environments where space is limited.

Designed for 1/4 inch OD tube applications, this fitting features a 0.281 inch bore on the male pipe end and a 0.165 inch bore on the face seal end. The 0.625 inch hex on the face seal side allows for straightforward torquing during assembly. As part of Brennan's FS6505 series, it is suited for hydraulic lines requiring a reliable transition between NPT and face seal connection types.

SKU: FS6505-04-04

Supplier Part Number (MPN): FS6505-04-04

Specifications

a Hole Dimensions
0.281 in
b Hole Dimensions
0.165 in
Connection Size 1
1/4 in
Connection Size 2
1/4 in
Connection Type
Female ORFS Swivel, MNPT
Connection Type 1
Male SAE NPTF
Connection Type 2
Female SAE ORFS Swivel
Dimension Standards
SAE J1453, SAE J476
Dimensions
1.52 in L
Finish
Trivalent Zinc-Plated
Fitting Type
Adapter
Hex Size
0.62 x 0.69 in
Material
Steel
Material Construction
AISI 12L14/C1045 Steel
Maximum Operating Pressure
6000 psi
Series
FS6505 Series
Thread Size
1/4-18 x 9/16-18
Tube OD
1/4 in
Tube Outside Diameter
1/4 in

Product Questions & Answers (1)

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Question by: Vince S on Mar 9, 2026, 4:48 PM
Will this fitting work with a standard 1/4 inch OD tube?
Answer by: Customer Support on Mar 10, 2026, 9:26 PM
This straight adapter is indeed designed for use with 1/4 inch outer diameter tubing.

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