D38999/24wb35PCB D38999 Series Jam Nut Receptacle Cable Connector on Board

D38999/24WB35PCB Jam-Nut Receptacle, MIL-DTL-38999 Series III / GJB599 Series III

The D38999/24WB35PCB 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 J599/24WB35PCB designation used in GJB599 Series III supply chains.

This jam-nut receptacle features Class W olive drab cadmium finish, shell size B (shell size 11), insert arrangement B35 / 11-35 (13 contacts: 13 x #22D signal, Service Class M - sealed), pin contacts (P), keying position C, and suffix B. The design supports EMI shielding, scoop-proof mating, self-locking threaded coupling, and removable crimp contacts. Note: keying position C and suffix B are both non-standard — verify availability and meaning with the supplier before procurement.

Product Features

• Conformant to MIL-DTL-38999 Series III (equivalent to GJB599 Series III / J599)
• Interchangeable with cross-reference part number J599/24WB35PCB
• 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 configuration with insert arrangement B35 / 11-35: 13 x #22D signal contacts (Service Class M - sealed)
• Keying position C and suffix B (both non-standard — verify with supplier)

Technical Specifications - J599/24WD4PN

Part Number Breakdown

Related options: J599/20WD4PN (or D38999/20WD4PN) uses square flange mount (/20); J599/24FD4PN uses electroless nickel finish (F); J599/24KD4PN uses stainless Class K; socket contact version is J599/24WD4SN; mating straight plug is J599/26WD4SN; square flange receptacle version is J599/20WD4PN. Same shell size also commonly uses arrangements D97 (12 x #22D signal, Service Class I) and D35 (13 x #22D sealed signal, Service Class M). Note: arrangement D4 is unusual — verify availability with supplier before procurement. There is no functional difference between J599 and D38999 prefixes for form-fit-function mating within the same Series III family.

Compatible Applications

The J599/24WD4PN jam-nut receptacle is intended for platforms that require EMI-capable threaded interconnects with low-count non-sealed signal circuits in shell size D (15), 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 circular connectors
• Industrial systems that standardize on GJB599 / MIL-DTL-38999 Series III interfaces

Selection Guide

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 D4 / 15-4.
• Install the jam-nut receptacle panel mount in the designated cutout (shell size 15).
• 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 (socket), and normal keying (N). Note: D4 is Service Class I (non-sealed) — do not use in applications requiring environmental sealing. Arrangement D4 is unusual — verify mating plug availability with supplier.

Why Choose J599/24WD4PN

Form-Fit-Function Compatibility

Choosing J599/24WD4PN ensures form-fit-function compatibility with D38999/24WD4PN supply chains while meeting GJB599 / MIL-DTL-38999 Series III requirements. The jam-nut receptacle geometry supports secure panel mounting, EMI continuity, and reliable low-count non-sealed signal interconnect with pin contacts and olive drab cadmium finish in shell size D (15) for aerospace and industrial systems.

Ordering Information

Order by the GJB599 designation J599/24WD4PN (or J599-24WD4PN), or cross-reference as D38999/24WD4PN, depending on your procurement standard. When requesting a quote, please confirm mating plug part number (socket contacts), panel mount requirements, contact plating, and required quantity. Note: D4 is Service Class I (non-sealed); specify D35 for sealed applications. Arrangement D4 is unusual — confirm availability with supplier before ordering.