D38999/24wc98pcn Amphenol Standard Receptacle PCB Circular Connector

D38999/24WC98PCN Jam-Nut Receptacle, MIL-DTL-38999 Series III / GJB599 Series III

The D38999/24WC98PCN 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 J599/24WC98PCN 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 C98 / 13-98 (6 contacts: 6 x #22D signal, Service Class I - non-sealed), pin contacts (P), and keying position C. The design supports EMI shielding, scoop-proof mating, self-locking threaded coupling, and removable crimp contacts. Note: keying position C is non-standard — verify availability 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 J599/24WC98PCN
• 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
• Non-sealed signal configuration with insert arrangement C98 / 13-98: 6 x #22D signal contacts (Service Class I - non-sealed)
• Keying position C (non-standard — verify availability with supplier)

Technical Specifications - D38999/24WC98PCN

Part Number Breakdown

Related options: D38999/20WC98PCN uses square flange mount (/20); D38999/24FC98PCN uses electroless nickel finish (F); D38999/24KC98PCN uses stainless Class K; socket contact version is D38999/24WC98SCN; mating straight plug is D38999/26WC98SCN; square flange receptacle version is D38999/20WC98PCN. Same shell size also commonly uses arrangements C35 (13 x #22D sealed signal, Service Class M) and C02 (2 x #22D signal, Service Class I). Note: arrangement 98 is Service Class I (non-sealed) — for sealed applications use C35. Note: keying position C is non-standard — confirm availability with supplier before procurement. There is no functional difference between D38999 and J599 prefixes for form-fit-function mating within the same Series III family.

Compatible Applications

The D38999/24WC98PCN jam-nut receptacle is intended for platforms that require EMI-capable threaded interconnects with low-count non-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 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 keying position (C, non-standard) before mating.
• Use the correct crimp tooling for #22D signal contacts specified by arrangement C98 / 13-98.
• 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 (socket), and matching keying position (C, non-standard). Note: C98 is Service Class I (non-sealed) — do not use in applications requiring environmental sealing. Keying C is non-standard — verify mating plug availability with supplier.

Why Choose D38999/24WC98PCN

Form-Fit-Function Compatibility

Choosing D38999/24WC98PCN ensures form-fit-function compatibility with J599/24WC98PCN supply chains while meeting 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 C (13) for aerospace and industrial systems.

Ordering Information

Order by the MIL-DTL-38999 designation D38999/24WC98PCN, or cross-reference as J599/24WC98PCN, depending on your procurement standard. When requesting a quote, please confirm mating plug part number (socket contacts, keying C), panel mount requirements, contact plating, and required quantity. Note: C98 is Service Class I (non-sealed); specify C35 for sealed applications. Keying position C is non-standard — confirm availability with supplier before ordering.