F5OHAO - Straight Thread Union SAE-ORB / SAE-ORB

SAE-ORB

ORB, or (SAE Straight Thread O-ring Boss) fittings, incorporate a port connection as recommended by the National Fire Protection Association (N.F.P.A.) for leak prevention in medium and high-pressure hydraulic systems. ORB connections are commonly manufactured in carbon, nickel-plated carbon & stainless steel and typically use Buna-N or Viton, 90 Durometer O-rings. The male connection is a straight UNF thread with an O-ring. The female port has a straight thread and a machined surface to provide a smooth, flat, accurately located surface (minimum spotface), along with a chamfer where the O-ring seats. The seal is created when the O-ring is compressed into the chamfer when mating the male and female connection providing a leak-tight seal.
O-ring Ports are the preferred port connection for use in hydraulic systems on industrial equipment and commercial products. The adjustable O-ring fittings described in this section provide a variety of options for connections between tube, hose and pipe ends. For more details click here

 What’s The Difference For UNF-1A, UNF-2A & UNF-3A

Thread classes 1A, 2A, and 3A form an essential part of the Unified National Coarse (UNC) and Unified National Fine (UNF) thread standards prevalent in the United States. These classifications primarily address thread size tolerance and the compatibility of thread interconnections.

Thread Class 1A

This class is earmarked for general use, prioritizing convenience and cost-effectiveness. It offers looser tolerances and lesser size accuracy, making it suitable for a range of basic applications where precision is not the primary concern.

Thread Class 2A

Representing a mid-level grade, Class 2A features tighter tolerances and greater size accuracy. It’s typically employed in applications with more stringent requirements, such as in the automotive and aerospace industries. The enhanced precision of Class 2A threads makes them suitable for components in vehicles and aircraft, where reliable performance is critical.

Thread Class 3A

Standing at the pinnacle of thread classes, 3A boasts the smallest tolerances and highest size accuracy. Its usage is predominant in high-end machinery and sensitive instruments. Precision tools, aerospace equipment, and other sophisticated technologies rely on the exacting standards of Class 3A threads to ensure optimal functionality and safety in environments where even the slightest deviation can have significant consequences.
sses is crucial in various industries, ensuring that the appropriate level of precision and reliability is applied in machinery and equipment manufacturing.