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Steel Adapter, 3/4-14 Female NPT To 1-5/8-12 Male SAE O-Ring Boss (Straight Thread O-Ring), Straight

Description & Features

Manufactured by Brennan Industries Inc this high-quality steel adapter is specifically designed to connect 3/4-14 female NPT threads to 1-5/8-12 male SAE O-Ring Boss threads.

This straight adapter ensures a secure and leak-resistant connection essential for industrial applications requiring reliable thread compatibility.

The steel construction provides exceptional durability and corrosion resistance making it suitable for demanding environments.

Ideal for fluid handling systems the adapter features a rigid design that maintains robust performance.

MPN: C1BX59

Specifications

A 1.19	Alternate Part Numbers Alternate Part Number 6405-20-12, Alternate Part Number A2216-12-20S, Alternate Part Number C1BX59, Alternate Part Number MI-02186335, Alternate Part Number MINO-00028J27710	Brand Brennan Industries Inc	Brand Brennan Industries	Pack Size 1.00	UOM EA	Supplier Part Number 6405-20-12-O	Thread 1 3/4-14	Thread 2 1-5/8-12	Thread Sealant No	Product Weight 0.60 lbs

Similar Products

Model Number	Thread 1	Thread 2	A
2216-12-12S Female NPT To Male ORB Adapter	3/4-14	1-1/16-12	1.67
2216-16-16S Female NPT To Male ORB Adapter	1-11-1/2	1-5/16-12	1.91
2216-2-4S Female NPT To Male ORB Adapter	1/8-27	7/16-20	0.92
2216-8-8S Female NPT To Male ORB Adapter	1/2-14	3/4-16	1.65
6405-24-20-O Female NPT To Male ORB Adapter	1-1/4-11-1/2	1-7/8-12	2.12
2216-12-16S Female NPT To Male ORB Adapter	3/4-14	1-5/16-12	1
2216-16-20S Female NPT To Male ORB Adapter	1-11-1/2	1-5/8-12	1
2216-20-20S Female NPT To Male ORB Adapter	1-1/4-11-1/2	1-5/8-12	2
2216-24-24S Female NPT To Male ORB Adapter	1-1/2-11-1/2	1-7/8-12	2
2216-4-5S Female NPT To Male ORB Adapter	1/4-18	1/2-20	1.2
2216-4-6S Female NPT To Male ORB Adapter	1/4-18	9/16-18	1.24
2216-6-12S Female NPT To Male ORB Adapter	3/8-18	1-1/16-12	1.34
2216-6-8S Female NPT To Male ORB Adapter	3/8-18	3/4-16	1.25
2216-8-10S Female NPT To Male ORB Adapter	1/2-14	7/8-14	1.54
2216-8-12S Female NPT To Male ORB Adapter	1/2-14	1-1/16-12	1.72
6405-04-04-O Female NPT To Male ORB Adapter	1/4-18	7/16-20	1.16
6405-04-06-O Female NPT To Male ORB Adapter	3/8-18	7/16-20	1.21
6405-05-02-O Female NPT To Male ORB Adapter	1/8-27	1/2-20	0.94
6405-06-06-O Female NPT To Male ORB Adapter	3/8-18	9/16-18	1.16
6405-06-08-O Female NPT To Male ORB Adapter	1/2-14	9/16-18	1.4
6405-08-04-O Female NPT To Male ORB Adapter	1/4-18	3/4-16	1.16
6405-10-04-O Female NPT To Male ORB Adapter	1/4-18	7/8-14	0.81
6405-10-06-O Female NPT To Male ORB Adapter	3/8-18	7/8-14	1.55
6405-12-16-O Female NPT To Male ORB Adapter	1-11-1/2	1-1/16-12	1.91
6405-16-08-O Female NPT To Male ORB Adapter	1/2-14	1-5/16-12	1.61
6405-20-12-O Female NPT To Male ORB Adapter	3/4-14	1-5/8-12	1.19
6405-24-16-O Female NPT To Male ORB Adapter	1-11-1/2	1-7/8-12	1

Product Questions & Answers (1)

Question by: Lance W on Aug 13, 2025, 1:55 PM

Got a hydraulic line running NPT on one end and the block port is SAE O-ring boss. This adapter gonna bridge that gap straight without any offset?

Answer by: Customer Support on Aug 15, 2025, 6:45 AM

That's exactly what this fitting is built for. One end is 3/4-14 female NPT and the other is 1-5/8-12 male SAE O-Ring Boss, so it connects those two thread types in a straight inline configuration with no angle or offset. The O-ring boss end uses a straight thread with an O-ring seal, which gives you a much tighter, leak-resistant connection at the port compared to a tapered thread seal alone. Steel construction holds up well in demanding fluid handling setups.