Square Flange Receptacle Mil-Dtl D38999 Series III Connector J59920wd35sn-H

J59920WD35SN-H Square Flange Wall Mount Receptacle, GJB599 Series III / D38999 Series III

The J59920WD35SN-H (standard form J599/20WD35SN-H) is a triple-start threaded circular electrical connector receptacle designed for aerospace, avionics, and industrial platforms. It conforms to GJB599 Series III / J599 requirements and is interchangeable with the D38999/20WD35SN-H designation used in MIL-DTL-38999 Series III supply chains.

This wall-mount square flange receptacle features Class W olive drab cadmium finish, shell size D (shell size 15), insert arrangement D35 / 15-35 (37 contacts), socket contacts (S), and normal keying (N). The trailing -H suffix denotes an optional durability / special-order marking; confirm with your supplier whether -H is required for the application or if the base part number J599/20WD35SN is acceptable.

Product Features

• Conformant to GJB599 Series III (equivalent to MIL-DTL-38999 Series III / D38999)
• Interchangeable with cross-reference part number D38999/20WD35SN-H (base: D38999/20WD35SN)
• Triple-start threaded self-locking coupling for high-vibration retention
• Square flange wall-mount receptacle for panel installation
• Class W olive drab cadmium shell finish for corrosion resistance
• Socket contact configuration (S) with insert arrangement D35 / 15-35: typically 37 x #22D contacts
• Normal keying (N) for standard polarization and anti-mismatch mating
• Optional -H durability / special suffix; order base P/N without -H when not specified

Technical Specifications - J59920WD35SN-H

Part Number Breakdown

Related options: J599/20FD35SN uses electroless nickel finish (F); pin versions use P contacts; jam-nut style is J599/24WD35SN; mating plug is typically J599/26WD35PN. Same shell size also commonly uses arrangements D5, D15, D18, D19, and D97. If your BOM lists J59920WD35SN without a slash, it is the same part as J599/20WD35SN. Order without -H unless the drawing or purchase order specifically requires the -H marking.

Compatible Applications

The J599/20WD35SN-H square flange receptacle is intended for platforms that require EMI-capable threaded interconnects with high-density #22D circuits. Typical use cases include:

• Aircraft and helicopter wiring harness panel interfaces
• 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, keying, and whether -H is required before mating or ordering.
• Use the correct crimp tooling for #22D contacts specified by arrangement D35 / 15-35.
• Mount the square flange securely to the panel and keep sealing surfaces clean.
• Fully engage the triple-start threaded coupling until the self-locking mechanism is seated.
• Select matching Series III plug and M85049 / GJB1784 accessories compatible with shell size 15.

Why Choose J599/20WD35SN-H

Form-Fit-Function Compatibility

Choosing J599/20WD35SN-H ensures form-fit-function compatibility with D38999/20WD35SN supply chains while meeting GJB599 Series III requirements. The square-flange threaded receptacle geometry supports secure mating, EMI continuity, and reliable high-density #22D interconnect in aerospace and industrial systems.

Ordering Information

Order by the GJB599 designation J599/20WD35SN-H (or compact J59920WD35SN-H), or cross-reference as D38999/20WD35SN-H, depending on your procurement standard. If -H is not required, order the base part number J599/20WD35SN. When requesting a quote, please confirm mating plug part number, contact plating, mounting panel cut-out, -H marking requirement, and required quantity.