Mil Spec Connector Wire Connectors Receptacle J599/20fd03pn
| Application: | Aerospace | Contact Material: | Copper |
| Surface Treatment: | Nickel Plating | Type of Contact: | Crimp Pin |
| Orientation: | Normal | Trademark: | Dconntek |
| HS Code: | 8536909000 |
J599/20FD03PN Square Flange Wall Mount Receptacle, GJB599 Series III / D38999 Series III
The J599/20FD03PN is a triple-start threaded circular electrical connector receptacle designed for aerospace, avionics, and industrial platforms. It conforms to GJB599 Series III / J599 requirements and is interchangeable with the D38999/20FD03PN designation used in MIL-DTL-38999 Series III supply chains.
This wall-mount square flange receptacle features Class F electroless nickel finish, shell size D (shell size 15), insert arrangement D03 / 15-03, pin contacts (P), and normal keying (N). The design supports EMI shielding, scoop-proof mating, self-locking threaded coupling, and removable crimp contacts.
Product Features
- Conformant to GJB599 Series III (equivalent to MIL-DTL-38999 Series III / D38999)
- Interchangeable with cross-reference part number D38999/20FD03PN
- Triple-start threaded self-locking coupling for high-vibration retention
- Square flange wall-mount receptacle for panel installation
- Class F electroless nickel shell finish for corrosion resistance and conductivity
- Pin contact configuration (P) with insert arrangement D03 / 15-03 (confirm contact size and count from manufacturer chart)
- Normal keying (N) for standard polarization and anti-mismatch mating
Technical Specifications - J599/20FD03PN
| Parameter | Value |
|---|---|
| Part Number | J599/20FD03PN |
| Equivalent Part Number | D38999/20FD03PN |
| Series | GJB599 Series III / D38999 Series III |
| Connector Type | Square flange wall mount receptacle (J599/20 / D38999/20) |
| Coupling | Triple-start threaded, self-locking |
| Finish Class | F - Electroless nickel plating |
| Shell Size | D (numeric shell size 15) |
| Insert Arrangement | D03 / 15-03 (confirm contact size and count on arrangement chart) |
| Contact Gender | P - Pin contacts (crimp, removable) |
| Keying / Polarization | N - Normal |
| Mounting | Square flange panel mount |
| Shielding | EMI shielded (conductive shell finish) |
| Operating Temperature | Approximately -65°C to +200°C (Class F) |
| Compatible Mating | J599/26FD03SN plug (or D38999/26FD03SN), shell size D, arrangement 03, socket contacts, keying N |
Part Number Breakdown
| Segment | Meaning |
|---|---|
| J599 | GJB599 Series III circular connector family (D38999 equivalent) |
| /20 | Square flange wall mount receptacle |
| F | Electroless nickel finish (Class F) |
| D | Shell size D (shell size 15) |
| 03 | Insert arrangement 03 (D03 / 15-03) |
| P | Pin contacts |
| N | Normal keying position |
Note: Common standard shell-size-D (15) layouts in this family are D5 (5 x #16), D15, D18, D19, D35 (37 x #22D), and D97. Arrangement D03 / 15-03 is not listed in the usual MIL-STD-1560 charts, so confirm the insert drawing with your supplier before ordering. Related finish option: J599/20WD03PN uses olive drab cadmium (W). There is no functional difference between J599 and D38999 prefixes for form-fit-function mating within the same Series III family.
Compatible Applications
The J599/20FD03PN square flange receptacle is intended for platforms that require EMI-capable threaded interconnects on shell size 15 panels. Typical use cases include:
- Aircraft and helicopter wiring harness panel interfaces
- Avionics LRUs, radar, and communication equipment
- Ground vehicles and rugged electronic enclosures
- Shipboard and outdoor equipment requiring sealed circular connectors
- Industrial systems that standardize on GJB599 / D38999 Series III interfaces
Selection Guide
| Requirement | Recommended Choice |
|---|---|
| Square flange receptacle, size D / arrangement 03 / pins / keying N / nickel | J599/20FD03PN - this product |
| Same shell size with standard 5 x #16 layout | J599/20FD05PN (D5 / 15-5) |
| Matching plug with socket contacts | J599/26FD03SN / D38999/26FD03SN |
| High-density #22D layout in shell size D | J599/20FD35PN |
Installation Notes
- Verify shell size, insert arrangement, contact gender, finish class, and keying before mating.
- Confirm arrangement D03 contact size, count, and tooling from the manufacturer chart before crimping.
- Mount the square flange securely to the panel and keep sealing surfaces clean.
- Fully engage the triple-start threaded coupling until the self-locking mechanism is seated.
- Select matching Series III plug and M85049 / GJB1784 accessories compatible with shell size 15.
Why Choose J599/20FD03PN
Form-Fit-Function Compatibility
Choosing J599/20FD03PN ensures form-fit-function compatibility with D38999/20FD03PN supply chains while meeting GJB599 Series III requirements. The square-flange threaded receptacle geometry supports secure mating, EMI continuity, and reliable panel interconnect in aerospace and industrial systems.
Ordering Information
Order by the GJB599 designation J599/20FD03PN, or cross-reference as D38999/20FD03PN, depending on your procurement standard. When requesting a quote, please confirm the insert arrangement drawing, mating plug part number, mounting panel cut-out, and required quantity.
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