D38999/24wb35sn Crimp Contacts Female Receptacle Mil Spec Connector

D38999/24WB35SN Jam-Nut Receptacle, MIL-DTL-38999 Series III / GJB599 Series III

The D38999/24WB35SN 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 J599/24WB35SN 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), 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 MIL-DTL-38999 Series III (equivalent to GJB599 Series III / J599)
• Interchangeable with cross-reference part number J599/24WB35SN
• 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)
• Normal keying (N) for standard polarization and anti-mismatch mating

Technical Specifications - D38999/24WB35SN

Part Number Breakdown

Related options: D38999/20WB35SN uses square flange mount (/20); D38999/24FB35SN uses electroless nickel finish (F); D38999/24KB35SN uses stainless Class K; pin contact version is D38999/24WB35PN; mating straight plug is D38999/26WB35PN; square flange receptacle version is D38999/20WB35SN. Same shell size also commonly uses arrangements B99 (7 x #22D signal, Service Class I) and B02 (2 x #22D signal, Service Class I). Note: arrangement 35 is Service Class M (sealed) — for non-sealed applications use B99 or B02. There is no functional difference between D38999 and J599 prefixes for form-fit-function mating within the same Series III family.

Compatible Applications

The D38999/24WB35SN jam-nut receptacle is intended for platforms that require EMI-capable threaded interconnects with medium-count sealed signal circuits in shell size B (11), 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

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 B35 / 11-35.
• Install the jam-nut receptacle panel mount in the designated cutout (shell size 11).
• 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 (pin), and normal keying (N). Note: B35 is Service Class M (sealed) — suitable for applications requiring environmental sealing.

Why Choose D38999/24WB35SN

Form-Fit-Function Compatibility

Choosing D38999/24WB35SN ensures form-fit-function compatibility with J599/24WB35SN supply chains while meeting MIL-DTL-38999 Series III requirements. The jam-nut receptacle geometry supports secure panel mounting, EMI continuity, and reliable medium-count sealed signal interconnect with socket contacts and olive drab cadmium finish in shell size B (11) for aerospace and industrial systems.

Ordering Information

Order by the MIL-DTL-38999 designation D38999/24WB35SN, or cross-reference as J599/24WB35SN, depending on your procurement standard. When requesting a quote, please confirm mating plug part number (pin contacts), panel mount requirements, contact plating, and required quantity. Note: B35 is Service Class M (sealed); specify B99 or B02 for non-sealed applications.