DELPHI FITTINGS
Part Number: 306
37° JIC Bulkhead Locknut
Product Overview
The Delphi Fittings Part 306 is a 37° JIC Bulkhead Locknut specifically designed to secure JIC bulkhead style fittings (such as the 2700, 2701, 2702, 2703, 2704, 2705, and 2706 series) to a panel, bulkhead, or equipment wall. This internally threaded nut provides the clamping force necessary to hold the bulkhead fitting firmly in place, ensuring a stable pass-through for hydraulic lines. Manufactured from high-quality carbon steel and zinc-plated for corrosion resistance, the Part 306 locknut is an essential component for any JIC bulkhead installation, conforming to SAE J514 dimensional standards for thread and hex size compatibility.
Key Features & Specifications
| Material | High-Grade Carbon Steel |
|---|---|
| Thread Type | Female JIC (UNF) (per SAE J514 / ISO 8434-2 dimensions for compatibility with threads on JIC bulkhead fittings) |
| Design | Hexagonal locknut, typically manufactured with a profile suitable for bulkhead applications (may be thinner than standard service nuts). |
| Body Style | Hex nut for secure tightening with a standard wrench. |
| Compatibility | Specifically designed for use with 37° JIC bulkhead fittings (e.g., Delphi 2700, 2701, 2702, 2703, 2704, 2705, 2706 series and similar). |
| Sealing Mechanism | This locknut primarily provides mechanical securing of the bulkhead fitting to the panel. Sealing at the panel interface is generally achieved by the shoulder of the bulkhead fitting compressing against the panel surface; an additional flat washer or sealant may be used by the installer if specific environmental sealing is required by the application. |
| Corrosion Protection | Standard Zinc Plating for enhanced durability and resistance to rust. |
| Primary Function | To securely fasten a JIC bulkhead fitting to a panel, bulkhead, or wall, preventing movement and ensuring a stable connection point for hydraulic lines. |
| Standard | Conforms to relevant dimensional aspects of SAE J514 for thread and hex size. |
Commonly Available Sizes (Part #306 Series)
Delphi Fittings offers the 37° JIC Bulkhead Locknut in a full range of sizes to match standard JIC bulkhead fittings. The size is designated by the JIC dash number corresponding to the bulkhead fitting it is intended to secure.
Examples include:
- 306-04: For -04 (7/16-20 UNF Thread) JIC Bulkhead Fittings
- 306-06: For -06 (9/16-18 UNF Thread) JIC Bulkhead Fittings
- 306-08: For -08 (3/4-16 UNF Thread) JIC Bulkhead Fittings
- 306-10: For -10 (7/8-14 UNF Thread) JIC Bulkhead Fittings
- 306-12: For -12 (1-1/16-12 UNF Thread) JIC Bulkhead Fittings
- 306-14: For -14 (1-3/16-12 UNF Thread) JIC Bulkhead Fittings
- 306-16: For -16 (1-5/16-12 UNF Thread) JIC Bulkhead Fittings
- 306-20: For -20 (1-5/8-12 UNF Thread) JIC Bulkhead Fittings
- 306-24: For -24 (1-7/8-12 UNF Thread) JIC Bulkhead Fittings
- 306-32: For -32 (2-1/2-12 UNF Thread) JIC Bulkhead Fittings
Note: Ensure the locknut size correctly matches the JIC bulkhead fitting being installed. For unlisted sizes or specific requirements, please contact our sales team.
Applications
The Part 306 JIC Bulkhead Locknut is an indispensable component for:
- Securely fastening all types of JIC bulkhead fittings (straight connectors, 45° elbows, 90° elbows, branch tees, run tees) to panels, plates, or equipment walls.
- Essential for hydraulic system installations in machine walls, vehicle chassis, control boxes, operator cabs, and equipment enclosures where a fixed and stable JIC connection point is required through a barrier.
- Widely used across diverse industries including mobile hydraulics (construction, agriculture), industrial machinery, transportation, and manufacturing.
- Ensuring the integrity and stability of through-panel hydraulic connections.
Installation & Usage Guidelines
- Verify that the panel hole is correctly sized to accommodate the body of the JIC bulkhead fitting.
- Insert the JIC bulkhead fitting through the prepared panel hole.
- Thread the Part 306 JIC Bulkhead Locknut onto the protruding threads of the bulkhead fitting on the opposite side of the panel.
- Tighten the locknut securely against the panel surface using an appropriately sized wrench. It is generally necessary to use a second wrench on the hex of the bulkhead fitting itself to prevent it from rotating while the locknut is being tightened.
- Ensure the locknut is tightened sufficiently to hold the bulkhead fitting firmly in place, preventing any movement or vibration that could compromise the hydraulic connections or the panel seal.
- The locknut itself does not provide a fluid seal; it provides mechanical retention. The fluid seal is made by the JIC connections to the bulkhead fitting.
Why Choose Delphi Fittings Part 306?
- Secure Fastening Solution: Provides a robust and reliable method for securing JIC bulkhead hydraulic fittings to panels and enclosures.
- Correct Fit and Compatibility: Designed to SAE J514 dimensional standards, ensuring proper fit and function with corresponding JIC bulkhead fittings.
- Durable Material Construction: Manufactured from high-grade carbon steel for excellent strength and long service life in demanding conditions.
- Enhanced Corrosion Resistance: Standard zinc plating offers superior protection against rust and environmental factors.
- Essential Installation Component: Critical for the correct, safe, and stable installation of any JIC bulkhead style fitting.
- Quality Manufacturing: Produced under Delphi Fittings' rigorous ISO 9001:2015 certified quality management system, guaranteeing consistent quality.
Get a Quote for Part 306 - 37° JIC Bulkhead Locknut
Ensure the secure and stable installation of your JIC bulkhead fittings with the essential Part 306 Locknut. Contact Delphi Fittings today for wholesale pricing, bulk order details, and expert technical support for all your hydraulic component needs.
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