Mil-Dtl D38999 Series III Wire Connector J59926we08sn 8pin Female Connector
J599/26WE08SN Straight Plug, GJB599 Series III / MIL-DTL-38999 Series III
The J599/26WE08SN 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 D38999/26WE08SN designation used in MIL-DTL-38999 Series III supply chains.
This straight plug features Class W olive drab cadmium finish, shell size E (shell size 17), insert arrangement E08 / 17-8 (coaxial / transmission line contacts), socket contacts (S), 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 D38999/26WE08SN
- 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
- Coaxial / transmission line configuration (S) with insert arrangement E08 / 17-8: socket contacts (Service Class M - sealed)
- Normal keying (N) for standard polarization and anti-mismatch mating
Technical Specifications - J599/26WE08SN
| Parameter | Value |
|---|---|
| Part Number | J599/26WE08SN |
| Equivalent Part Number | D38999/26WE08SN |
| 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 | E (numeric shell size 17) |
| Insert Arrangement | E08 / 17-8 (coaxial / transmission line contacts) |
| Contact Gender | S - Socket 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 | J599/20WE08PN or J599/24WE08PN receptacle (or D38999 equivalents), shell size E, arrangement 08, pin 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) |
| E | Shell size E (shell size 17) |
| 08 | Insert arrangement 08 (E08 / 17-8, coaxial / transmission line) |
| S | Socket contacts |
| N | Normal keying position |
Related options: J599/26FE08SN uses electroless nickel finish (F); J599/26KE08SN uses stainless Class K; pin contact version is J599/26WE08PN; mating square-flange receptacle is J599/20WE08PN; jam-nut receptacle is J599/24WE08PN. Same shell size also commonly uses arrangements E35 (55 x #22D signal) and E06 (low-count #12 power). There is no functional difference between J599 and D38999 prefixes for form-fit-function mating within the same Series III family.
Compatible Applications
The J599/26WE08SN straight plug is intended for platforms that require EMI-capable threaded interconnects with coaxial / transmission line circuits in shell size E (17). 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 E / arrangement 08 / sockets / keying N / cadmium | J599/26WE08SN - this product |
| Same plug with electroless nickel finish | J599/26FE08SN |
| Same plug with stainless Class K finish | J599/26KE08SN |
| Matching square flange receptacle with pin contacts | J599/20WE08PN / D38999/20WE08PN |
| Matching jam-nut receptacle with pin contacts | J599/24WE08PN / D38999/24WE08PN |
| Pin contact version of this plug | J599/26WE08PN |
| High-density signal layout in shell size E | J599/26WE35PN |
Installation Notes
- Verify shell size, insert arrangement, contact gender, finish class, and keying before mating.
- Use the correct crimp tooling for coaxial / transmission line contacts specified by arrangement E08 / 17-8.
- Select and install a compatible M85049 / GJB1784 backshell or strain relief for shell size 17.
- 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 J599/26WE08SN
Form-Fit-Function Compatibility
Choosing J599/26WE08SN ensures form-fit-function compatibility with D38999/26WE08SN supply chains while meeting GJB599 Series III requirements. The straight plug geometry supports secure mating, EMI continuity, and reliable coaxial / transmission line interconnect in aerospace and industrial systems.
Ordering Information
Order by the GJB599 designation J599/26WE08SN, or cross-reference as D38999/26WE08SN, 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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