DELPHI FITTINGS
Part Number: 6409
SAE ORB Hex Socket Plug
Product Overview
The Delphi Fittings Part 6409 is an SAE O-Ring Boss (ORB) Hex Socket Plug, designed for effectively sealing unused female SAE ORB ports in hydraulic systems. This plug is distinguished by its internal hexagonal (Allen) socket, which allows for a flush or recessed installation using a standard hex key or Allen wrench. This low-profile design is particularly beneficial in applications where space is limited or a smooth external surface is desired. Featuring a male SAE ORB thread with an integrated O-ring, the Part 6409 plug provides a high-integrity, leak-proof seal. It is manufactured from high-quality carbon steel and zinc-plated for corrosion resistance, ensuring reliability in various industrial and mobile hydraulic applications.
Key Features & Specifications
| Material | High-Grade Carbon Steel |
|---|---|
| Thread Type | Male SAE O-Ring Boss (ORB) (per SAE J1926-1 / ISO 11926-1) |
| Drive Style | Internal Hexagonal Socket (Allen Key Drive) |
| Installation Profile | Allows for flush or recessed mounting. |
| Sealing Mechanism | O-ring (supplied with the plug) seals against the chamfered boss in the female ORB port. |
| Corrosion Protection | Standard Zinc Plating for enhanced durability. |
| Primary Function | To securely seal unused female SAE O-Ring Boss ports. |
| Working Pressure | Suitable for high-pressure hydraulic applications. Specific ratings vary by size. |
| O-Ring Material | Typically Buna-N (Nitrile) 90 Durometer. Viton® or other materials available upon request. |
Commonly Available Sizes (Part #6409 Series)
Delphi Fittings offers the SAE ORB Hex Socket Plug in a comprehensive range of standard ORB sizes to fit various port dimensions. Sizes are typically denoted by ORB dash numbers.
Examples include (Male ORB):
- 6409-02: -02 (5/16-24) ORB Male
- 6409-03: -03 (3/8-24) ORB Male
- 6409-04: -04 (7/16-20) ORB Male
- 6409-05: -05 (1/2-20) ORB Male
- 6409-06: -06 (9/16-18) ORB Male
- 6409-08: -08 (3/4-16) ORB Male
- 6409-10: -10 (7/8-14) ORB Male
- 6409-12: -12 (1-1/16-12) ORB Male
- 6409-14: -14 (1-3/16-12) ORB Male
- 6409-16: -16 (1-5/16-12) ORB Male
- 6409-20: -20 (1-5/8-12) ORB Male
- 6409-24: -24 (1-7/8-12) ORB Male
- 6409-32: -32 (2-1/2-12) ORB Male
Note: For unlisted sizes or specific material requirements for the O-ring, please contact our sales team.
Applications
The Part 6409 SAE ORB Hex Socket Plug is ideal for:
- Sealing unused SAE O-Ring Boss ports where a flush or low-profile installation is critical.
- Applications in tight spaces where an external hex head might be inaccessible.
- Hydraulic manifolds, valves, pumps, cylinders, and filter housings.
- Terminating fluid lines cleanly during system maintenance, testing, or for permanent closure.
- Use in mobile equipment, industrial machinery, and high-performance hydraulic systems requiring a neat and secure seal.
Installation & Usage Guidelines
- Ensure the female ORB port (especially the boss sealing surface) and the male threads and O-ring groove of the plug are clean, undamaged, and free from contaminants.
- Verify the O-ring is correctly sized for the plug, lubricated with system-compatible fluid (e.g., hydraulic oil), and properly seated in its groove on the plug.
- Insert the ORB hex socket plug into the female ORB port.
- Use an appropriately sized Allen key (hex wrench) to engage the internal socket and tighten the plug to the manufacturer's recommended torque specification for the ORB size. This ensures proper O-ring compression for a secure seal.
- Avoid over-tightening, which can damage the O-ring, the plug, or the port threads.
Why Choose Delphi Fittings Part 6409?
- Flush/Recessed Installation: The internal hex socket allows for a low-profile seal, ideal for compact designs and preventing snagging.
- Superior ORB Sealing: Provides an excellent, high-pressure seal characteristic of SAE O-Ring Boss connections.
- Clean Aesthetic: Offers a neater appearance compared to external hex head plugs.
- Durable and Reliable: Manufactured from high-grade carbon steel for robust performance.
- Standard Compliance: Designed to meet SAE J1926 specifications for ORB connections.
- Broad Size Availability: Offered in a wide range of ORB sizes to meet diverse application needs.
- Quality Manufacturing: Produced under Delphi Fittings' ISO 9001:2015 certified quality management system.
Get a Quote for Part 6409 - SAE ORB Hex Socket Plug
For reliable and flush sealing of unused SAE O-Ring Boss ports, the Part 6409 Hex Socket Plug is an optimal choice. Contact Delphi Fittings for wholesale pricing, bulk order information, and expert assistance with your hydraulic fitting needs.
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