Skip to the beginning of the images gallery

Steel Adapter, 3/4-16 Male SAE O-Ring Boss (Straight Thread O-Ring) To 7/16-20 Female SAE O-Ring Boss (Straight Thread O-Ring), Straight

Description & Features

The Steel Adapter from Brennan Industries enables reliable connections between 3/4-16 Male SAE O-Ring Boss and 7/16-20 Female SAE O-Ring Boss threads. This precision-engineered adapter ensures a seamless integration in hydraulic systems minimizing the risk of leaks and providing robust performance in demanding environments.

Manufactured to high standards this adapter features a straight thread O-ring design ensuring compatibility and dependable sealing in various industrial applications. Its durable steel construction offers superior resistance to wear and corrosion making it a valuable component in your hydraulic assemblies.

Ideal for use in machinery and equipment requiring secure and efficient fluid transfer the adapter is designed to meet stringent industry specifications. The straightforward design facilitates easy installation and maintenance providing an effective solution for hydraulic connections.

Brand: Brennan Industries Inc

Supplier Part Number: 6410-08-04-O

Specifications

A 0.81	Alternate Part Numbers Alternate Part Number 6410-08-04, Alternate Part Number AFF1010-0804S, Alternate Part Number C1DY38, Alternate Part Number FF1010-0804S, Alternate Part Number MI-00353389, Alternate Part Number MINO-00028F65948	Brand Brennan Industries Inc	Brand Brennan Industries	Pack Size 1.00	UOM EA	Supplier Part Number 6410-08-04-O	Thread 1 3/4-16	Thread 2 7/16-20	Thread Sealant No	Product Weight 0.13 lbs

Similar Products

Model Number	Thread 1	Thread 2	A
6410-24-12-O Steel Male To Female ORB Adapter	1-7/8-12	1-1/16-12	1
FF1010-1006S Steel Male To Female ORB Adapter	7/8-14	9/16-18	0.81
FF1010-1008S Steel Male To Female ORB Adapter	7/8-14	3/4-16	1.25
FF1010-1208S Steel Male To Female ORB Adapter	1-1/16-12	3/4-16	1
FF1010-1612S Steel Male To Female ORB Adapter	1-5/16-12	1-1/16-12	1.59
6410-04-06-O Steel Male To Female ORB Adapter	7/16-20	9/16-18	1.16
6410-05-04-O Steel Male To Female ORB Adapter	1/2-20	7/16-20	1.22
6410-06-04-O Steel Male To Female ORB Adapter	9/16-18	7/16-20	1.03
6410-06-08-O Steel Male To Female ORB Adapter	9/16-18	3/4-16	1.39
6410-08-04-O Steel Male To Female ORB Adapter	3/4-16	7/16-20	0.81
6410-08-08-O Steel Male To Female ORB Adapter	3/4-16	3/4-16	1.39
6410-08-10-O Steel Male To Female ORB Adapter	3/4-16	7/8-14	1.48
6410-10-12-O Steel Male To Female ORB Adapter	7/8-14	1-1/16-12	1.66
6410-12-04-O Steel Male To Female ORB Adapter	1-1/16-12	7/16-20	1.09
6410-16-06-O Steel Male To Female ORB Adapter	1-5/16-12	9/16-18	1.13
6410-24-20-O Steel Male To Female ORB Adapter	1-7/8-12	1-5/8-12	1.58
FF1010-0806S Steel Male To Female ORB Adapter	3/4-16	9/16-18	1.06
FF1010-1206S Steel Male To Female ORB Adapter	1-1/16-12	9/16-18	1
FF1010-1210S Steel Male To Female ORB Adapter	1-1/16-12	7/8-14	1.44
FF1010-1216S Steel Male To Female ORB Adapter	1-1/16-12	1-5/16-12	1.79
FF1010-1608S Steel Male To Female ORB Adapter	1-5/16-12	3/4-16	1
FF1010-2016S Steel Male To Female ORB Adapter	1-5/8-12	1-5/16-12	1

Product Questions & Answers (1)

Question by: Jerry C on Dec 31, 2025, 11:17 AM

got a port on my hydraulic block that's 3/4-16 ORB and i need to step it down to a 7/16-20 female connection. this the right bushing for that?

Answer by: Customer Support on Jan 2, 2026, 8:53 AM

That's what this one's built for. The male end threads into your 3/4-16 ORB port, and the 7/16-20 female end accepts whatever fitting or line you're connecting on the smaller side. Brennan makes these to tight tolerances, so the straight thread O-ring seats on both ends seal up clean without a lot of fuss.