05MORB-06FORB STRAIGHT REDUCER

Description & Features

A steel straight reducer fitting designed for hydraulic lines requiring a step-down in port size, the 05MORB-06FORB Straight Reducer connects a 1/2-20 Male SAE O-Ring Boss thread to a 9/16-18 Female SAE O-Ring Boss thread, both conforming to SAE J514. The O-ring boss configuration on each end provides a reliable, leak-resistant seal suited to hydraulic systems where consistent sealing integrity is critical.

Constructed from steel with an NBR O-ring seal material, this fitting measures 1.260 inches in overall length and is part of Brennan's 6410-O series. It is rated for use in industrial hydraulic applications where a compact inline reducer is needed between two ORB-ported components. California residents should note this product is subject to Prop 65 requirements.

SKU: 6410-05-06-O

Supplier Part Number (MPN): 6410-05-06-O

Alternate Part Numbers: 6410-05-06, AFF1010-0506S, BR-6410-05-06-O

Specifications

Brand
BRENNAN
Connection Size 1
5/16 in
Connection Size 2
3/8 in
Connection Type
Female SAE ORB, Male SAE ORB
Connection Type 1
Male SAE ORB
Connection Type 2
Female SAE ORB
Dimension Standards
SAE J1926, SAE J514
Dimensions
1.24 in L
Finish
Trivalent Zinc-Plated
Fitting Type
Reducer
Hex Size
0.81 in
Material
Steel
Material Construction
12L14/C1045 Steel
Maximum Operating Pressure
6000 psi
Operating Temperature
-40 to 250 deg F
Seal Material
NBR
Series
6410-O Series
Thread 2 Drill Dimensions
0.297 in
Thread B1 Drill Dimensions
0.234 in
Thread Size
9/16-18 x 1/2-20

Product Questions & Answers (1)

Question by: Darryl M on Sep 1, 2025, 12:12 PM
So this fitting steps down the size of a hydraulic line? I'm working with some tight spaces.
Answer by: Customer Support on Sep 2, 2025, 12:35 PM
This straight reducer fitting adapts between a 1/2-20 Male SAE O-Ring Boss and a 9/16-18 Female SAE O-Ring Boss. The overall length is 1.260 inches, which should help if space is a concern.

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