D38999/24wc35pn Factory Supply Multi Pin Mil-Dtl-38999 Series Connector
D38999/24WC35PN Jam-Nut Receptacle, MIL-DTL-38999 Series III / GJB599 Series III
The D38999/24WC35PN is a triple-start threaded circular electrical connector jam-nut receptacle designed for aerospace, avionics, and industrial platforms. It conforms to MIL-DTL-38999 Series III requirements and is interchangeable with the J599/24WC35PN designation used in GJB599 Series III supply chains.
This jam-nut receptacle features Class W olive drab cadmium finish, shell size C (shell size 13), insert arrangement C35 / 13-35 (13 contacts: 13 x #22D signal, Service Class M - sealed), 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 MIL-DTL-38999 Series III (equivalent to GJB599 Series III / J599)
- Interchangeable with cross-reference part number J599/24WC35PN
- Triple-start threaded self-locking coupling for high-vibration retention
- Jam-nut receptacle style for panel or bulkhead mounting
- Class W olive drab cadmium shell finish for corrosion resistance and conductivity
- Sealed signal-only configuration (P) with insert arrangement C35 / 13-35: 13 x #22D signal contacts (Service Class M - sealed)
- Normal keying (N) for standard polarization and anti-mismatch mating
Technical Specifications - D38999/24WC35PN
| Parameter | Value |
|---|---|
| Part Number | D38999/24WC35PN |
| Equivalent Part Number | J599/24WC35PN |
| Series | GJB599 Series III / MIL-DTL-38999 Series III |
| Connector Type | Jam-nut receptacle (D38999/24 / J599/24) |
| Coupling | Triple-start threaded, self-locking |
| Finish Class | W - Olive drab cadmium plating |
| Shell Size | C (numeric shell size 13) |
| Insert Arrangement | C35 / 13-35 (13 contacts: 13 x #22D signal) |
| Contact Gender | P - Pin contacts (crimp, removable) |
| Keying / Polarization | N - Normal |
| Cable End Style | Jam-nut receptacle (panel / bulkhead mount, mating with plug) |
| Shielding | EMI shielded (conductive shell finish) |
| Operating Temperature | Approximately -65°C to +150°C (Class W) |
| Suffix Designation | None — keying N is the trailing segment |
| Compatible Mating | D38999/26WC35SN or D38999/20WC35SN plug (or J599 equivalents), shell size C, arrangement 35, socket contacts, keying N |
Part Number Breakdown
| Segment | Meaning |
|---|---|
| D38999 | MIL-DTL-38999 Series III circular connector family (J599 equivalent) |
| /24 | Jam-nut receptacle |
| W | Olive drab cadmium finish (Class W) |
| C | Shell size C (shell size 13) |
| 35 | Insert arrangement 35 (C35 / 13-35, 13 x #22D signal) |
| P | Pin contacts |
| N | Normal keying position |
Related options: D38999/20WC35PN uses square flange mount (/20); D38999/24FC35PN uses electroless nickel finish (F); D38999/24KC35PN uses stainless Class K; socket contact version is D38999/24WC35SN; mating straight plug is D38999/26WC35SN; square flange receptacle version is D38999/20WC35PN. Same shell size also commonly uses arrangements C04 (4 x #12 power), C26 (mid-count #20 signal), and C97 (mixed power/signal). There is no functional difference between D38999 and J599 prefixes for form-fit-function mating within the same Series III family.
Compatible Applications
The D38999/24WC35PN jam-nut receptacle is intended for platforms that require EMI-capable threaded interconnects with mid-count sealed signal circuits in shell size C (13), using olive drab cadmium finish. 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 |
|---|---|
| Jam-nut receptacle, size C / arrangement 35 / pins / keying N / cadmium | D38999/24WC35PN - this product |
| Same receptacle with square flange mount (/20) | D38999/20WC35PN |
| Same receptacle with electroless nickel finish | D38999/24FC35PN |
| Same receptacle with stainless Class K finish | D38999/24KC35PN |
| Mating straight plug with socket contacts | D38999/26WC35SN / J599/26WC35SN |
| Socket contact version of this receptacle | D38999/24WC35SN |
| Low-count power layout in shell size C | D38999/24WC04PN |
Installation Notes
- Verify shell size, insert arrangement, contact gender, finish class, and normal keying (N) before mating.
- Use the correct crimp tooling for #22D signal contacts specified by arrangement C35 / 13-35.
- Install the jam-nut receptacle panel mount in the designated cutout (shell size 13).
- Fully engage the triple-start threaded coupling with the mating plug until the self-locking mechanism is seated.
- Mate only with Series III plugs of the same shell size, arrangement, opposite contact gender, and normal keying (N).
Why Choose D38999/24WC35PN
Form-Fit-Function Compatibility
Choosing D38999/24WC35PN ensures form-fit-function compatibility with J599/24WC35PN supply chains while meeting MIL-DTL-38999 Series III requirements. The jam-nut receptacle geometry supports secure panel mounting, EMI continuity, and reliable mid-count sealed signal interconnect with olive drab cadmium finish in shell size C (13) for aerospace and industrial systems.
Ordering Information
Order by the MIL-DTL-38999 designation D38999/24WC35PN, or cross-reference as J599/24WC35PN, depending on your procurement standard. When requesting a quote, please confirm mating plug part number, panel mount requirements, contact plating, and required quantity.
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