J599/24WD4pn D38999 Series III Receptacle Electrical Wire Connector
J599/24WD4PN Jam-Nut Receptacle, GJB599 (Equivalent to MIL-DTL-38999 Series III)
The J599/24WD4PN is a triple-start threaded circular electrical connector jam-nut receptacle designed for aerospace, avionics, and industrial platforms. It conforms to GJB599 Series III requirements, which is interchangeable with MIL-DTL-38999 Series III. The equivalent MIL-DTL-38999 part number is D38999/24WD4PN.
This jam-nut receptacle features olive drab cadmium finish (Class W), shell size D (15), insert arrangement D-04 (13 contacts: 13 x #16S power, Service Class I - non-sealed), pin contacts (P), and normal keying (N). The /24 designation indicates a jam-nut receptacle for panel mounting. The design supports EMI shielding, scoop-proof mating, self-locking triple-start threaded coupling, and removable crimp contacts.
Product Features
- Conformant to GJB599 Series III (interchangeable with MIL-DTL-38999 Series III)
- Equivalent D38999 part number: D38999/24WD4PN
- Triple-start threaded self-locking coupling for high-vibration retention
- Jam-nut receptacle style (/24) for panel-mount installation with locking nut
- Olive drab cadmium finish (Class W) for corrosion resistance
- Conductive shell for EMI shielding
- Non-sealed power configuration with insert arrangement D-04: 13 x #16S power contacts (Service Class I - non-sealed)
- Pin contacts (P) for mating with socket-contact plugs
- Normal keying (N) for standard polarization and anti-mismatch mating
Technical Specifications - J599/24WD4PN
| Parameter | Value |
|---|---|
| Part Number | J599/24WD4PN |
| Equivalent D38999 Part Number | D38999/24WD4PN |
| Standard | GJB599 Series III (interchangeable with MIL-DTL-38999 Series III) |
| Connector Type | Jam-nut receptacle (/24 designation) |
| Coupling | Triple-start threaded, self-locking |
| Shell Finish / Material | W - Olive drab cadmium plating (Class W) |
| Shell Size | D (15) |
| Insert Arrangement | D-04 (13 contacts: 13 x #16S power, Service Class I - non-sealed) |
| Contact Gender | P - Pin contacts (crimp, removable) |
| Keying / Polarization | N - Normal keying (standard) |
| Cable End Style | Jam-nut receptacle (panel mount, mating with straight plug) |
| Shielding | EMI shielded (conductive shell) |
| Operating Temperature | -65°C to +150°C (Class W) |
| Compatible Mating | J599/26WD4SN or D38999/26WD4SN (straight plug, socket contacts, Class W finish, shell size D, arrangement D-04, normal keying). Also mates with D38999/20WD4SN (environment-resistant plug). |
Part Number Breakdown
| Segment | Meaning |
|---|---|
| J599 | GJB599 standard (equivalent to MIL-DTL-38999) |
| /24 | Connector type: jam-nut receptacle (panel mount) |
| W | Finish class: olive drab cadmium (Class W) |
| D | Shell size D (15) |
| 04 | Insert arrangement D-04 (13 x #16S power, Service Class I - non-sealed) |
| P | Pin contacts |
| N | Normal keying (standard polarization) |
Related options: J599/24WD4SN (socket contacts, normal keying); J599/24FD4PN (electroless nickel finish, Class F); J599/24KD4PN (stainless steel, Class K); J599/26WD4PN (straight plug, pin contacts); J599/24WD35PN (sealed arrangement D-35, 13 x #22D signal). Mating components must have opposite contact gender (socket).
Compatible Applications
The J599/24WD4PN jam-nut receptacle is intended for platforms that require GJB599 / MIL-DTL-38999 Series III compliant threaded interconnects with medium-count non-sealed power circuits in shell size D, using pin contacts. Typical use cases include:
- Aircraft and helicopter panel-mounted wiring interconnects
- Avionics LRUs, radar, and communication equipment
- Ground vehicles and rugged electronic enclosures
- Shipboard and outdoor equipment requiring circular connectors
- Programs that standardize on GJB599 / MIL-DTL-38999 Series III interfaces
Selection Guide
| Requirement | Recommended Choice |
|---|---|
| Jam-nut receptacle, Class W / size D / arrangement 04 / pins / normal keying / non-sealed | J599/24WD4PN (D38999/24WD4PN) - this product |
| Mating straight plug with socket contacts | J599/26WD4SN (D38999/26WD4SN) |
| Mating environment-resistant plug with socket contacts | D38999/20WD4SN |
| Socket contact version of this receptacle | J599/24WD4SN |
| Electroless nickel finish (Class F) | J599/24FD4PN |
| Stainless steel finish (Class K) | J599/24KD4PN |
| Sealed signal arrangement (Service Class M) | J599/24WD35PN |
Installation Notes
- Verify shell size, insert arrangement, contact gender, and normal keying before mating.
- Use the correct crimp tooling for #16S power contacts specified by arrangement D-04.
- Install the jam-nut receptacle through the panel cutout and secure with the locking nut to the specified torque.
- Fully engage the triple-start threaded coupling with the mating plug until the self-locking mechanism is seated.
- Mate only with GJB599 / D38999 Series III plugs of the same shell size D, arrangement D-04, opposite contact gender (socket), and normal keying. Note: D-04 is Service Class I (non-sealed) — not suitable for applications requiring environmental sealing.
Why Choose J599/24WD4PN
GJB599 / MIL-DTL-38999 Series III Compliance
Choosing J599/24WD4PN ensures compliance with GJB599 Series III requirements, interchangeable with MIL-DTL-38999 Series III (equivalent D38999/24WD4PN). The jam-nut receptacle geometry supports reliable panel-mount installation with non-sealed power capability, pin contacts, and normal keying for aerospace and industrial systems.
Ordering Information
Order by the GJB599 designation J599/24WD4PN (or D38999/24WD4PN for MIL-DTL-38999). When requesting a quote, please confirm mating plug part number (socket contacts), shell finish class, contact plating, and required quantity. Note: D-04 is Service Class I (non-sealed); specify D-35 for sealed signal applications or other arrangements as needed.
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