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Fast Delivery SAE J1926-1 Carbon Steel ORB Hydraulic Fittings
Precision-engineered connectors for high-pressure hydraulic systems are NJ ORB (O-Ring Boss) hydraulic fittings. These carbon steel fittings, which are made in accordance with SAE J1926-1, guarantee leak-free operation in demanding applications such as construction, agricultural, and industrial gear. Numerous configurations (straight, elbow, tee, etc.) and well-known part numbers (e.g., 6400, 6408-HHP, 6815) make them popular in North America due to their dependability at high pressure.
Description
1. Material & Durability
Made from 45# (1045) carbon steel for superior strength and corrosion resistance, compatible with hydraulic fluids, oils, and other industrial media.
2. Sealing Technology
Features an O-ring (Nirtile o-ring or Viton ring for choosing) seated in the male fitting’s groove, compressed during assembly to create a 100% leak-proof seal. It can operate at 3,000–6,000 PSI (higher for HHP variants like 6408-HHP).
3. SAE J1926-1 Compliance
Adheres to stringent industry standards for dimensional accuracy, pressure ratings, and material specs.
4. Common Configurations & Sizes
Includes straight (6400), 45° elbow (6805), and tee (6420) fittings with sizes range from 1/8" to 2" UNF threads, catering to diverse hydraulic line requirements.
5. Surface Treatment
Zinc-plated or zinc nickel plated or nickel plated to enhance corrosion resistance.
6403-NWO
6403
6405
6408
6815Why Choose Our ORB Fittings?
Strict QA Testing: Each fitting undergoes pressure and material checks.
HHP Options: High-pressure variants (e.g., 6408-HHP) for extreme conditions.
Fast Shipping: NJ have a sufficient inventory for all ORB fittings, so it’s okay for us to deliver bulk orders within 7-15 working days to our North American customers.
Technical Data
UNO Male x UNO Adjustable Male Straight Adapter
| Thread A | Thread B | Part No | L | E | F | H1 | ||
| Dash | UNO | Dash | UNO | mm | mm | mm | mm | |
| -9 | 9/16-18 | -9 | 9/16-18 | 6403-NWO-06-06 | 40 | 10 | 10 | 17.46 |
| -12 | 3/4-16 | -12 | 3/4-16 | 6403-NWO-08-08 | 45 | 11 | 11 | 22.23 |
| -14 | 7/8-14 | -14 | 7/8-14 | 6403-NWO-10-10 | 52 | 13 | 13 | 25.4 |
Details
Key Advantages
✔ Zero-Leak Design: O-ring compression ensures long-term sealing integrity.
✔ High-Pressure Tolerance: Suitable for heavy-duty hydraulic systems (e.g., log splitters, excavators).
✔ Interchangeability: Compatible with other SAE J1926-1 ORB fittings.
✔ Wide Availability: Popular part numbers (e.g., 6405, 6810) reduce
downtime.
Usage Notes
⚠ Installation: Tighten fittings to SAE-specified torque to avoid O-ring damage.
⚠ Maintenance: Inspect O-rings periodically; replace if worn/cracked.
⚠ Fluid Compatibility: Verify compatibility with seals for non-standard fluids.
⚠ Avoid Over-Tightening: May deform threads or crush the O-ring.
Application
O-Ring Boss fittings are applied to various industries, including hydraulic pumps, cylinders, and valves, mobile equipment (tractors, loaders), industrial automation and fluid power systems.
