J599/26fa35sn Manufacturers Amphenol Standard Plug 35p Mil Spec Connectors

J599/26FA35SN Straight Plug, GJB599 Series III / MIL-DTL-38999 Series III

The J599/26FA35SN 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 D38999/26FA35SN designation used in MIL-DTL-38999 Series III supply chains.

This straight plug features Class F electroless nickel finish, shell size A (shell size 9), insert arrangement A35 / 9-35 (7 contacts: 7 x #22D signal), 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 D38999/26FA35SN
• Triple-start threaded self-locking coupling for high-vibration retention
• Straight plug style for cable-end termination
• Class F electroless nickel shell finish for corrosion resistance and conductivity
• Sealed signal-only configuration (S) with insert arrangement A35 / 9-35: 7 x #22D signal contacts (Service Class M - sealed)
• Normal keying (N) for standard polarization and anti-mismatch mating

Technical Specifications - J599/26FA35SN

Part Number Breakdown

Related options: J599/26WA35SN uses olive drab cadmium finish (W); J599/26KA35SN uses stainless Class K; pin contact version is J599/26FA35PN; mating square-flange receptacle is J599/20FA35PN; jam-nut receptacle is J599/24FA35PN. Same shell size also commonly uses arrangements A1 (1 x #22D signal) and A98 (non-sealed, Service Class I). There is no functional difference between J599 and D38999 prefixes for form-fit-function mating within the same Series III family.

Compatible Applications

The J599/26FA35SN straight plug is intended for platforms that require EMI-capable threaded interconnects with low-count sealed signal circuits in shell size A (9). 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 A35 / 9-35.
• Select and install a compatible M85049 / GJB1784 backshell or strain relief for shell size 9.
• 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 normal keying (N).

Why Choose J599/26FA35SN

Form-Fit-Function Compatibility

Choosing J599/26FA35SN ensures form-fit-function compatibility with D38999/26FA35SN supply chains while meeting GJB599 Series III requirements. The straight plug geometry supports secure mating, EMI continuity, and reliable low-count sealed signal interconnect in the smallest shell size (A / 9) for aerospace and industrial systems.

Ordering Information

Order by the GJB599 designation J599/26FA35SN, or cross-reference as D38999/26FA35SN, depending on your procurement standard. When requesting a quote, please confirm mating receptacle part number, backshell / accessory needs, contact plating, and required quantity.