Part Number: 6410-SS

SAE ORB Male x SAE ORB Female Reducer/Expander (Stainless Steel)

Product Overview

The Delphi Fittings Part 6410-SS is a versatile straight Reducer/Expander adapter, precision-machined from high-quality stainless steel (typically Grade 316 SS). This fitting is specifically designed to connect two SAE O-Ring Boss (ORB) ports or fittings of different sizes, allowing for seamless integration within a hydraulic system. It features a male SAE O-Ring Boss thread (complete with an O-ring groove) on one end and a female SAE O-Ring Boss thread on the other. This configuration enables users to either reduce from a larger female ORB port to connect a smaller male ORB fitting, or expand from a smaller female ORB port to connect a larger male ORB fitting, depending on the specific male/female ORB sizes of the adapter. The robust stainless steel construction ensures exceptional corrosion resistance, making the 6410-SS indispensable for applications in harsh environments such as marine, chemical processing, food and beverage industries, or any system requiring high purity and longevity.

Key Features & Specifications

Material	High-Grade Stainless Steel (Typically 316 SS for maximum corrosion and chemical resistance)
End 1 Configuration	Male SAE O-Ring Boss (ORB) (conforming to SAE J1926-1 / ISO 11926-1)
End 2 Configuration	Female SAE O-Ring Boss (ORB) (thread geometry conforming to SAE J1926-1 / ISO 11926-1)
Body Style	Straight Reducer/Expander Adapter (often referred to as an ORB Bushing style for reducers) with hexagonal (hex) features for secure wrench engagement.
Sealing Mechanism	Male ORB End: Utilizes an elastomeric O-ring (Viton® recommended for stainless steel) which seals against the chamfered boss of the mating female ORB port. Female ORB End: Designed to accept a standard male ORB fitting, which will have its own O-ring to seal against this adapter's female port chamfer.
Corrosion Protection	Inherent to the stainless steel material; may also be passivated to further enhance surface integrity and corrosion resistance.
Primary Function	To provide a straight, leak-proof connection between SAE O-Ring Boss (ORB) ports or fittings of differing sizes, either reducing or expanding the line size, while offering the superior corrosion resistance of stainless steel.
Working Pressure	Suitable for high-pressure hydraulic systems. Specific pressure ratings are dependent on the sizes of the ORB connections and the application conditions.
O-Ring Material (for Male ORB end)	Viton® (FKM) is strongly recommended for stainless steel applications to ensure compatibility with a wide range of fluids and temperatures. The O-ring is typically supplied with the male end of this adapter.

Commonly Available Sizes (Part #6410-SS Series)

Delphi Fittings offers the 6410-SS Stainless Steel ORB Male x ORB Female Reducer/Expander in various size combinations. Sizes are denoted by the ORB dash numbers for both the male and female ends, indicating whether it functions as a reducer (male larger than female) or an expander (male smaller than female).

Examples (Male ORB x Female ORB - primarily showing reducers, expanders also possible):

6410-06-04-SS: -06 (9/16-18 UNF) Male ORB x -04 (7/16-20 UNF) Female ORB (Reducer)
6410-08-06-SS: -08 (3/4-16 UNF) Male ORB x -06 (9/16-18 UNF) Female ORB (Reducer)
6410-08-04-SS: -08 (3/4-16 UNF) Male ORB x -04 (7/16-20 UNF) Female ORB (Reducer)
6410-10-08-SS: -10 (7/8-14 UNF) Male ORB x -08 (3/4-16 UNF) Female ORB (Reducer)
6410-12-08-SS: -12 (1-1/16-12 UNF) Male ORB x -08 (3/4-16 UNF) Female ORB (Reducer)
6410-12-10-SS: -12 (1-1/16-12 UNF) Male ORB x -10 (7/8-14 UNF) Female ORB (Reducer)
6410-16-12-SS: -16 (1-5/16-12 UNF) Male ORB x -12 (1-1/16-12 UNF) Female ORB (Reducer)

Note: The male ORB end of this adapter includes an appropriate O-ring (Viton® recommended for stainless steel). For specific size combinations not listed, including expander configurations (e.g., -04 Male ORB x -06 Female ORB), or particular material grade requirements, please contact our sales team.

Applications

The Part 6410-SS Stainless Steel ORB Reducer/Expander is essential for:

Adapting existing SAE O-Ring Boss ports to accommodate hydraulic components, lines, or fittings with different ORB thread sizes, particularly within stainless steel systems.
Facilitating changes in line sizes at ORB connection points in environments demanding high corrosion resistance, such as marine, offshore, chemical processing, food and beverage, and pharmaceutical industries.
System modifications and upgrades where components with varying ORB port sizes need to be integrated seamlessly while maintaining material integrity.
Applications requiring high purity and resistance to aggressive fluids or frequent cleaning cycles where stainless steel is the material of choice.

Installation & Usage Guidelines

Thoroughly clean all ORB threads, the O-ring groove (on the male end of the 6410-SS), the female ORB threads of the 6410-SS, and all mating port/fitting surfaces. Ensure they are undamaged and free from any contaminants.
Verify that the O-ring material (Viton® is recommended for the male end of the 6410-SS) is correct for the specific application's fluid, temperature, and pressure. Ensure the O-ring is correctly lubricated with a system-compatible fluid or O-ring lubricant.
Carefully install the lubricated O-ring onto the male ORB end of the 6410-SS adapter, ensuring it is properly seated in its groove.
Thread the male ORB end of the 6410-SS adapter into the mating (larger or smaller, depending if it's an expander application for this end) female ORB port by hand until the O-ring makes initial contact and the shoulder seats. Tighten using a wrench on the adapter's hex to the manufacturer's recommended torque for that ORB size and stainless steel material.
Thread a mating male ORB fitting (which will have its own O-ring) into the female ORB end of the 6410-SS adapter. Ensure the mating male ORB fitting's O-ring is also correctly installed and lubricated. Tighten this connection to its recommended torque.
Always use appropriate backup wrenches on the adapter's hex and mating components during tightening to prevent distortion. For stainless steel fittings, using a thread lubricant or anti-seize compound (compatible with stainless steel) on all ORB threads is crucial to prevent galling during assembly.

Why Choose Delphi Fittings Part 6410-SS?

Versatile Size Adaptation: Enables straightforward and reliable connection between differing SAE O-Ring Boss (ORB) port and fitting sizes, functioning as either a reducer or an expander.
Exceptional Corrosion Resistance: Manufactured from high-grade stainless steel (typically 316 SS), offering maximum durability and an extended service life in harsh chemical, marine, or high-humidity environments.
Reliable ORB Sealing on Both Connections: Utilizes the industry-proven SAE O-Ring Boss seal for both the male end of the adapter and the male fitting connected to the female end, ensuring high-pressure, leak-proof performance.
High-Pressure Capability: Engineered to withstand the demanding pressures characteristic of modern hydraulic systems.
Broad Chemical and Temperature Tolerance: Stainless steel construction provides a significantly wider range of compatibility with aggressive fluids and extreme operating temperatures.
Full Adherence to Industry Standards: Thread dimensions and port details meet SAE J1926 (ORB) specifications, ensuring proper fit, function, and global interchangeability.
Quality-Assured Manufacturing: Produced under Delphi Fittings' rigorous ISO 9001:2015 certified quality management system.

Get a Quote for Part 6410-SS - Stainless Steel SAE ORB Male x ORB Female Reducer/Expander

For reliably adapting between different SAE O-Ring Boss port sizes in corrosive or high-purity environments, the Part 6410-SS stainless steel reducer/expander offers a high-quality and durable solution. Contact Delphi Fittings today for wholesale pricing, bulk order information, and expert engineering support.

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