Skip to the beginning of the images gallery

Steel Adapter, 9/16-18 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

Optimize your industrial hydraulic systems with this precision-engineered adapter. This straight reducer connects a 9/16-18 Male SAE O-Ring Boss to a 7/16-20 Female SAE O-Ring Boss ensuring secure and reliable performance. It is meticulously crafted by Brennan Industries Inc. reflecting superior quality and reliability.

The straight thread O-ring design eliminates leaks and enhances overall efficiency. Manufactured from steel the adapter provides exceptional durability and resistance to harsh environments. Ideal for demanding applications in various industries this component ensures optimal performance and longevity.

The adapter's no-thread sealant design offers simplicity in installation and maintenance streamlining your workflow. It seamlessly integrates into existing systems making it a versatile choice for many hydraulic configurations.

**Supplier Part Number:** 6410-06-04-O

Specifications

A 1.03	Alternate Part Numbers Alternate Part Number 6410-06-04, Alternate Part Number AFF1010-0604S, Alternate Part Number C1DY36	Brand Brennan Industries Inc	Brand Brennan Industries	Pack Size 1.00	UOM EA	Supplier Part Number 6410-06-04-O	Thread 1 9/16-18	Thread 2 7/16-20	Thread Sealant No	Product Weight 0.08 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 (2)

Question by: Kirk K on May 1, 2025, 11:56 AM

got a 9/16-18 ORB port on my pump outlet and need to step it down to a 7/16-20 line fitting, this the right piece for that?

Answer by: Customer Support on May 3, 2025, 8:14 AM

That's what this adapter is built for. The male end threads into your 9/16-18 SAE O-Ring Boss port, and the female end accepts a 7/16-20 SAE O-Ring Boss fitting on your line side. Both connections use straight thread O-ring sealing, so you're not relying on thread sealant or tape to hold the joint. Steel construction holds up well in working hydraulic environments where fittings see real pressure cycling and vibration.

Question by: Lance G on Jun 13, 2025, 8:12 AM

So this thing goes from a 9/16 to a 7/16? Just want to make sure I'm gettin the right size before I order.

Answer by: Customer Support on Jun 14, 2025, 2:30 PM

Correct, this steel adapter reduces from a 9/16-18 Male SAE O-Ring Boss to a 7/16-20 Female SAE O-Ring Boss.