Hydraulic Hose Fittings
American Made certified

American Made

ISO 9001 Quality certified

ISO 9001 Quality

9/16-18 ORB Hose Fittings

9/16-18 ORB (O-Ring Boss) hose fittings provide secure, leak-free connections in high-pressure hydraulic systems. These American-made steel fittings feature straight-thread design with O-ring seals, available in straight and 90-degree elbow configurations. Compatible with various thread sizes from #4 to #20, they're engineered for demanding applications in construction, agriculture, and industrial machinery.

Our Range of Products
Hydraulic Hose Fittings

Hydraulic Hose Fittings

  • American-made steel construction
  • Multiple connection types available
  • High-pressure system compatible

Frequently Asked Questions

What size are orb fittings?

ORB fittings are available in standard sizes from #4 through #20, with 9/16-18 referring to the thread diameter and pitch. Thread sizes correspond to tube OD ratings.

Is sae thread the same as orb?

What is the difference between orb and JIC fittings?

What pressure rating do these ORB fittings support?

Can I mix ORB fittings with other connection types?

How do I ensure proper installation of ORB fittings?

What maintenance do ORB fittings require?

Didn't find what you're looking for?

Talk to our experts for custom solutions and tailored guidance.

Industries We Serve

Construction Equipment

Construction Equipment

ORB fittings provide reliable hydraulic connections for excavators, loaders, and heavy machinery requiring leak-free performance.

Industrial Machinery

Industrial Machinery

Essential for manufacturing equipment and industrial hydraulic systems demanding high-pressure, vibration-resistant connections.

Agricultural Equipment

Agricultural Equipment

Connects hydraulic systems in tractors, harvesters, and farm machinery for reliable operation in demanding field conditions.

Firewood Processing

Firewood Processing

Powers log splitters and processing equipment with secure, leak-free hydraulic connections for continuous operation.

Didn't find what you're looking for?

Talk to our experts for custom solutions and tailored guidance.

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Why Construction & Industrial Equipment Operators Choose AHS Hydraulics

American Manufacturing Excellence

All hydraulic fittings designed, fabricated, and tested in the USA with raw materials sourced from North America, ensuring highest quality control standards.

Direct Manufacturer Pricing

Purchase directly from the manufacturer to receive correct, high-quality parts at unbeatable prices without middleman markups or delays.

Expert Technical Support

Access experienced engineers and salesmen with over a decade of industry experience who provide professional assistance with product selection and technical guidance.

Request a Quote for 9/16-18 ORB Hose Fittings Today

Submit your inquiry and our experienced team will respond promptly with pricing, technical specifications, and expert guidance to ensure you get the right fittings for your hydraulic system.

Contact Us Today

For immediate assistance, feel free to give us a direct call at 607-307-4029 You can also send us a quick email at info@ahshydraulics.com