Mil-Dtl D38999 Series III Wire Connector J599/26wg35pn 35 Pin Male Connector
J599/26WG35PN Straight Plug, GJB599 Series III / MIL-DTL-38999 Series III
The J599/26WG35PN is a triple-start threaded circular electrical connector plug designed for aerospace, avionics, and industrial platforms. It conforms to GJB599 Series III requirements and is interchangeable with the D38999/26WG35PN designation used in MIL-DTL-38999 Series III supply chains.
This straight plug features Class W olive drab cadmium finish, shell size G (shell size 19), insert arrangement G35 / 19-35 (55 contacts: 55 x #22D signal), 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 D38999/26WG35PN
- Triple-start threaded self-locking coupling for high-vibration retention
- Straight plug style for cable-end termination
- Class W olive drab cadmium shell finish for corrosion resistance and conductivity
- Sealed signal-only configuration (P) with insert arrangement G35 / 19-35: 55 x #22D signal contacts (Service Class M - sealed)
- Normal keying (N) for standard polarization and anti-mismatch mating
Technical Specifications - J599/26WG35PN
| Parameter | Value |
|---|---|
| Part Number | J599/26WG35PN |
| Equivalent Part Number | D38999/26WG35PN |
| Series | GJB599 Series III / MIL-DTL-38999 Series III |
| Connector Type | Straight plug (J599/26 / D38999/26) |
| Coupling | Triple-start threaded, self-locking |
| Finish Class | W - Olive drab cadmium plating |
| Shell Size | G (numeric shell size 19) |
| Insert Arrangement | G35 / 19-35 (55 contacts: 55 x #22D signal) |
| Contact Gender | P - Pin contacts (crimp, removable) |
| Keying / Polarization | N - Normal |
| Cable End Style | Straight plug (backshell / accessory attach as required) |
| Shielding | EMI shielded (conductive shell finish) |
| Operating Temperature | Approximately -65°C to +150°C (Class W) |
| Compatible Mating | J599/20WG35SN or J599/24WG35SN receptacle (or D38999 equivalents), shell size G, arrangement 35, socket contacts, keying N |
Part Number Breakdown
| Segment | Meaning |
|---|---|
| J599 | GJB599 Series III circular connector family (D38999 equivalent) |
| /26 | Straight plug |
| W | Olive drab cadmium finish (Class W) |
| G | Shell size G (shell size 19) |
| 35 | Insert arrangement 35 (G35 / 19-35) |
| P | Pin contacts |
| N | Normal keying position |
Related options: J599/26FG35PN uses electroless nickel finish (F); J599/26KG35PN uses stainless Class K; socket contact version is J599/26WG35SN; mating square-flange receptacle is J599/20WG35SN; jam-nut receptacle is J599/24WG35SN. Same shell size also commonly uses arrangements G04, G07 (dual coaxial), G08, and G53. There is no functional difference between J599 and D38999 prefixes for form-fit-function mating within the same Series III family.
Compatible Applications
The J599/26WG35PN straight plug is intended for platforms that require EMI-capable threaded interconnects with high-density signal circuits in shell size G (19). Typical use cases include:
- Aircraft and helicopter wiring harness cable ends
- 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 / MIL-DTL-38999 Series III interfaces
Selection Guide
| Requirement | Recommended Choice |
|---|---|
| Straight plug, size G / arrangement 35 / pins / keying N / cadmium | J599/26WG35PN - this product |
| Same plug with electroless nickel finish | J599/26FG35PN |
| Same plug with stainless Class K finish | J599/26KG35PN |
| Matching square flange receptacle with socket contacts | J599/20WG35SN / D38999/20WG35SN |
| Matching jam-nut receptacle with socket contacts | J599/24WG35SN / D38999/24WG35SN |
| Socket contact version of this plug | J599/26WG35SN |
| Dual coaxial layout in shell size G | J599/26WG07PN |
Installation Notes
- Verify shell size, insert arrangement, contact gender, finish class, and keying before mating.
- Use the correct crimp tooling for #22D signal contacts specified by arrangement G35 / 19-35.
- Select and install a compatible M85049 / GJB1784 backshell or strain relief for shell size 19.
- Fully engage the triple-start threaded coupling until the self-locking mechanism is seated.
- Mate only with Series III receptacles of the same shell size, arrangement, opposite contact gender, and matching keying.
Why Choose J599/26WG35PN
Form-Fit-Function Compatibility
Choosing J599/26WG35PN ensures form-fit-function compatibility with D38999/26WG35PN supply chains while meeting GJB599 Series III requirements. The straight plug geometry supports secure mating, EMI continuity, and reliable high-density signal interconnect in aerospace and industrial systems.
Ordering Information
Order by the GJB599 designation J599/26WG35PN, or cross-reference as D38999/26WG35PN, depending on your procurement standard. When requesting a quote, please confirm mating receptacle part number, backshell / accessory needs, contact plating, and required quantity.
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