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BRENNAN ADAPTER

Description & Features

Designed for hydraulic line connections requiring a male-to-male transition, this straight long adapter from Brennan Industries converts between a 9/16-18 Male JIC SAE 37° Flare (SAE J514) and a 9/16-18 Male SAE O-Ring Boss thread of the same specification. The extended overall length of 10.640 mm accommodates installations where standard-length adapters fall short due to port depth or clearance constraints.

Constructed from straight steel with an NBR O-ring seal, the Brennan Adapter is built for reliable sealing in demanding hydraulic systems. The O-ring boss end provides a positive, leak-resistant seal at the port face, while the JIC flare end delivers dependable mechanical seating. California residents should note this product is subject to a Prop 65 warning.

SKU: 6400-L-06-06-OX10.64

Supplier Part Number (MPN): 6400-L-06-06-OX10.64

Specifications

Brand Brennan Industries Inc	Brand Brennan Industries	Pack Size 1.00	UOM EA	Supplier Part Number 6400-L-06-06-OX10.64	Product Weight 0.99 lbs

Product Questions & Answers (1)

Question by: Dean H on Mar 10, 2026, 1:39 PM

Just want to make sure, this adapter will let me hook up a JIC flare to an O-ring boss, right? Both sides are 9/16-18?

Answer by: Customer Support on Mar 11, 2026, 2:58 PM

That's correct. This Brennan adapter is designed to provide a reliable connection between a 9/16-18 Male JIC SAE 37° Flare and a 9/16-18 Male SAE O-Ring Boss.