J599/26wb99sn Equivalent Amphenol Waterproof Wire Connector

J599/26WB99SN Straight Plug, GJB599 Series III / D38999 Series III

The J599/26WB99SN is a triple-start threaded circular electrical connector plug designed for aerospace, avionics, and industrial platforms. It conforms to GJB599 Series III / J599 requirements and is interchangeable with the D38999/26WB99SN designation used in MIL-DTL-38999 Series III supply chains.

This straight plug features Class W olive drab cadmium finish, shell size B (shell size 11), insert arrangement B99 / 11-99 (7 contacts), 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 D38999/26WB99SN
• Triple-start threaded self-locking coupling for high-vibration retention
• Straight plug style for cable-end termination
• Class W olive drab cadmium shell finish for corrosion resistance
• Socket contact configuration (S) with insert arrangement B99 / 11-99: typically 7 x #20 contacts
• Normal keying (N) for standard polarization and anti-mismatch mating

Technical Specifications - J599/26WB99SN

Part Number Breakdown

Related options: J599/26FB99SN uses electroless nickel finish (F); pin versions use P contacts; right-angle plug style is typically J599/26 with R-type accessories rather than a different style code in the basic P/N. Mating square-flange receptacle is J599/20WB99PN; jam-nut receptacle is J599/24WB99PN. Same shell size also commonly uses arrangements B2, B5, B35, and B98. There is no functional difference between J599 and D38999 prefixes for form-fit-function mating within the same Series III family.

Compatible Applications

The J599/26WB99SN straight plug is intended for platforms that require EMI-capable threaded interconnects with compact #20 circuit counts. 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 / D38999 Series III interfaces

Selection Guide

Installation Notes

• Verify shell size, insert arrangement, contact gender, finish class, and keying before mating.
• Use the correct crimp tooling for #20 contacts specified by arrangement B99 / 11-99.
• Select and install a compatible M85049 / GJB1784 backshell or strain relief for shell size 11.
• 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 matching keying.

Why Choose J599/26WB99SN

Form-Fit-Function Compatibility

Choosing J599/26WB99SN ensures form-fit-function compatibility with D38999/26WB99SN supply chains while meeting GJB599 Series III requirements. The straight plug geometry supports secure mating, EMI continuity, and reliable compact #20 interconnect in aerospace and industrial systems.

Ordering Information

Order by the GJB599 designation J599/26WB99SN, or cross-reference as D38999/26WB99SN, depending on your procurement standard. When requesting a quote, please confirm mating receptacle part number, backshell / accessory needs, contact plating, and required quantity.