J599/20WG35SN MIL-DTL-38999 Series III 35 Pin Socket Receptacle AVIA Electronics

AVIA Electronics J599/20WG35SN military circular connector for demanding aerospace, defense, and industrial applications. Contact us for pricing, datasheets, sample availability, and bulk orders.

999999 in stock

  • ISO & Quality Certifications
  • 100% Intermateable with original parts.
  • 1-Year Warranty with Full After-Sales Support
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Product Overview

The J599/20WG35SN is a high-reliability circular connector designed for demanding military, aerospace, and industrial applications. Engineered for dependable performance in harsh environments, this connector supports secure electrical connections where mechanical strength, environmental protection, and reliable operation under vibration and temperature variations are essential.

This part number belongs to the J599 family of military circular connectors associated with MIL-DTL-38999 specifications. The series features rugged construction and configurations suited to different mounting, contact, and wiring requirements. For precise compatibility and performance requirements, consult the applicable product datasheet.

With its durable construction and high-reliability design, the J599/20WG35SN is suitable for military equipment, aerospace systems, defense electronics, and industrial installations requiring dependable connectivity. Please refer to the product datasheet to verify the exact shell size, insert arrangement, contact configuration, mounting style, and shell finish.

Part Number Breakdown

Part Number Breakdown
Part Number Breakdown

Stock & Availability

In Stock Factory Lead Time
In Stock Factory Lead Time

In Stock / Factory Lead Time

At AVIA Electronics, we understand that your project timelines depend on component reliability. To support your mission-critical operations, we maintain a proactive inventory strategy for the J599/20WG35SN and our broader line of high-reliability connectors.
 
  • In-Stock (Ready to Ship): Contact our sales team to confirm current availability of the J599/20WG35SN. Once stock is confirmed, orders are processed and dispatched according to the agreed delivery schedule, helping minimize downtime for your production or maintenance operations.

  • Factory Lead Time: For large-volume requirements of the J599/20WG35SN or items requiring production, we provide project-specific lead-time estimates. We coordinate manufacturing and order fulfillment to support your delivery requirements, with updates throughout the process.

  • Supply Assurance: We prioritize long-term supply stability for our clients. If you require scheduled deliveries, bulk kitting, or buffer stock of the J599/20WG35SN for multi-phase projects, our logistics team can coordinate a tailored supply plan aligned with your project milestones.

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Multiple shell sizes available
Multiple shell sizes available

Multiple shell sizes available

The J599/20WG35SN is part of the MIL-DTL-38999 connector family, designed to support demanding military, aerospace, and industrial interconnection requirements. To help engineers select the right configuration, AVIA Electronics offers connector solutions across a range of shell sizes and contact arrangements, subject to model availability.

  • Full Range of Shell Sizes: While the J599/20WG35SN represents a specific connector configuration, the broader MIL-DTL-38999 family includes shell sizes ranging from 09 to 25. The appropriate size depends on the required contact arrangement, installation space, and electrical requirements.

  • Threaded Coupling Interface: MIL-DTL-38999 Series III connectors use a triple-start threaded coupling mechanism designed for secure mating and resistance to accidental disengagement under vibration. Verify mating compatibility and coupling requirements against the applicable product specifications.

  • Precision Engineering: MIL-DTL-38999 connectors are designed for demanding operating environments, including applications involving vibration and temperature variations. Confirm the specific environmental ratings, contact configuration, and qualification requirements using the relevant datasheet.

Contact AVIA Electronics for assistance selecting a suitable connector configuration for your application.

Custom-configurations-supported
Custom-configurations-supported

Custom configurations supported

At AVIA Electronics, we recognize that off-the-shelf components may not always meet the unique demands of your high-performance systems. While the J599/20WG35SN represents a specific high-reliability connector configuration, we offer engineering support to help identify suitable connector solutions for your application and integration requirements.

  • Customized Contact Configurations: If your project requires a specific contact arrangement or a combination of power and signal connections, our team can help evaluate suitable configurations within the J599 series based on your electrical and mechanical requirements.

  • Specialized Plating & Material Options: Depending on availability and technical feasibility, we can help identify shell materials and surface finishes suited to your operating environment, including requirements for corrosion resistance, electromagnetic compatibility, and weight optimization.

  • Installation & Mechanical Integration: For space-constrained installations, we can help identify compatible mounting arrangements, backshells, and accessories to support your equipment layout and simplify connector integration.

  • Accessory Sourcing & Kitting: We can coordinate the supply of compatible accessories, such as backshells, protective caps, and other connector components, subject to availability and compatibility verification, helping streamline procurement and assembly.

Contact AVIA Electronics with your drawings, technical specifications, or project requirements so our team can evaluate a suitable solution for your application.

Samples
Samples

Sample Policy & Flexible Order Support

At AVIA Electronics, we provide high-reliability interconnect solutions designed to support demanding engineering applications. To help you evaluate whether the J599/20WG35SN meets your project requirements, we offer sampling support for prototype development and technical evaluation.
 
  • Sample Availability: Samples of the J599/20WG35SN may be available for engineering evaluation, fit verification, and prototype testing. Sample pricing and availability are confirmed upon request, allowing you to assess the connector’s suitability before proceeding with larger orders.

  • No Minimum Order Quantity (No MOQ): We support projects at different development stages, from initial prototyping to production. Contact our sales team to discuss small-quantity orders and confirm the available purchasing options for the J599/20WG35SN.

  • Secure Fulfillment: We take care to ensure that sample orders are handled and packaged appropriately for shipment. Delivery arrangements and estimated dispatch times are confirmed during order processing to help you plan your engineering evaluation and project schedule.

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Logistics & Distribution Services

AVIA Electronics utilizes a reliable distribution framework to ensure the secure and accurate delivery of components to global destinations. Shipping options available for your order are calculated and displayed during the checkout process based on your specific requirements.

SF-Express
SF-Express
DHL, UPS, FedEx
DHL, UPS, FedEx

Supported Carriers & Services

We partner with established logistics providers to offer a range of delivery solutions:

  • Express Carriers: DHL, UPS, FedEx, SF Express

  • Postal & Standard Services: Belgium Post, Global Direct Standard Line, Registered Mail

Shipping Cost Calculation

Shipping charges are dynamically calculated at checkout to ensure accuracy. The final cost is determined by the following variables:

  • Package Weight: The total combined weight of the products and necessary protective packaging.

  • Service Selection: Costs vary depending on the chosen carrier and the selected service level (e.g., expedited express vs. standard delivery).

  • Destination: Rates are adjusted based on the specific country or region of delivery.

Technical Specifications

Basic Info.

Model NO.

J599/20WG35SN

Application

Industrial Automation
Aerospace Systems

Contact Material

Copper

Shell Material

Aluminum alloy

Shell Size

21

Termination Style

Crimp

Contact Plating

Gold

Transport Package

Standard Expect Package

Origin

China

Production Capacity

100000

Certification

ISO 9001, ISO 14001, ISO 45001, CE, RoHS, REACH, IP68, 500-Hour Salt Spray Tested

Contact Resistance

≤ 12.0(mΩ)

Surface Treatment

Olive green cadmium plating

Processing and Customization

OEM/ODM

Shell Style

Wall Mount Receptacle

Mounting Style

Wall Mount Receptacle

Mating Style

Triple-Start Threaded Coupling

Grommet and seal

Silicon rubber

Endurance

500 cycles

Trademark

AVIA

HS Code

8536901100

Packaging & Weight

Package Size

41.00cm * 31.00cm * 30.00cm

Package Gross Weight

100g

Mechanical Specifications

Vibration

Sine

60g, with temperature cycling and simulated accessory (36 hours) 

Random

44.1 grms in high temperature  49.5 grms in ambient temperature 

Shock

At 3 ms half sinusoid, peak value of acceleration: 300g

Contact Retention

22D#

45N

20#

67N

16#

111N

12#

111N

10#

111N

8 #

111N

Electrical Performance

Voltage rating (V)

Package Size

M

N

I

II

Sea level

1300

1000

1800

2300

21000M

800

600

1000

1000

Contact resistance and rated current

Contact Size

Diameter (mm)

Resistance (mΩ)

Current (A)

22D#

Φ 0.76

≤ 12.0

5.0

20#

Φ 1.00

≤ 5.0

7.5

16#

Φ 1.60

≤ 2.5

13.0

12#

Φ 2.40

≤ 1.5

23.0

10#

Φ 3.15

≤ 1.0

40.0

Environmental Performance

Operating temperature

W class

-65 oC ~ +175 oC

K, F class

-65 oC ~ +200 oC

Salt spray

F class

48h

W class

500h

K class

1000h

Typical Applications

  • Military Communication
  • Aerospace Systems
  • UAV & Defense Electronics
  • Industrial Automation

Cross-Reference & Mating

Compatible Brands & Mating

Brands

Equivalents

Mates

Amphenol

J599/20WG35SN

J599/26WG35PN

Souriau

-

-

ITT Cannon

-

-

Aero/Conesys

-

-

Deutsch

-

-

Compatible Backshells & Caps

Type

Backshells

Dust Caps

Straight, Grommet Nut

M85049/14-19S

D38999/33K19N

45°Quick Clamp

M85049/15-19S

90°Quick Clamp

M85049/16-19S

Straight, Spin Coupling Environmental EMI/RFI Backshell

M85049/18-19S

Straight, Spin Coupling Non-Environmental EMI/RFI Backshell

M85049/19-19S

Straight Crimp Ring Adapter

M85049/20-19S

Straight, Spin Coupling Non-Environmental Backshell

M85049/21-19S

Straight Strain Relief Clamp

M85049/38-19S

90°Strain Relief Clamp

M85049/39-19S

45°, Spin Coupling Environmental EMI/RFI Backshell

M85049/78-19S

90°, Spin Coupling Environmental EMI/RFI Backshell

M85049/79-19S

Straight, Spin Coupling, cont. Shrink Boot Adapter

M85049/69-19S

Straight, Self-Lock Band Lock Adapter

M85049/88-19S

45°, Self-Lock Band Lock Adapter

M85049/89-19S

90°, Self-Lock Band Lock Adapter

M85049/90-19S

Straight Pre-Shield Adapter

M85049/115-19S

90°Pre-Shield Adapter

M85049/117-19S

Straight, Strain Relief Clamp

M85049/124-19S

 90°Strain Relief Clamp

M85049/126-19S

Technical Assembly Kit Included

Protecting Your Connection Integrity

Improper tools often lead to damaged terminals and costly downtime. To ensure the performance of your MIL-DTL-38999 and MIL-DTL-26482 series assemblies, we include a Complimentary AVIA Precision Assembly Kit with every order.

By providing this kit at no additional cost, we ensure that every contact is handled with the correct tooling, maintaining the full electrical specifications and long-term reliability of your system.

The Complimentary AVIA Precision Assembly Kit

High-Reliability Terminal Contacts:
Engineered for optimal electrical and mechanical fit.

Extraction Tool
Extraction Tool

Dedicated Extraction Tooling:
Ensures safe, non-destructive handling of all contacts.

Compliance

Quality Management Certifications

Our quality management system, certified to ISO 9001, ensures consistent manufacturing processes and reliable product quality. AVIA Electronics follows internationally recognized quality standards — including ISO 9001 for quality management, ISO 14001 for environmental management, and ISO 45001 for occupational health and safety — to deliver dependable connector solutions.

Product Compliance Certifications

Our connectors comply with international environmental and safety requirements, ensuring reliable and compliant solutions for global markets. AVIA Electronics products meet CE marking requirements, RoHS directive standards for restricted hazardous substances, and REACH regulation requirements for chemical safety, supporting seamless integration into global supply chains.

Product Test Reports

Our products undergo rigorous testing to verify environmental protection, durability, and performance in demanding applications. Connectors are validated to IP68 waterproof and dust-proof ratings and undergo 500-hour salt spray testing to confirm corrosion resistance in harsh military, aerospace, and marine environments.

Warranty

1-Year Quality Warranty

We provide a 1-year limited warranty on all products, covering defects in materials and workmanship. Please note that this warranty does not cover damages resulting from improper use, unauthorized modifications, or intentional misuse.

1-year-warranty