JY3470A2039PN Narrow Flange Bayonet Receptacle, GJB598 Series 2 / MIL-DTL-26482 Series II

The JY3470A2039PN is a bayonet-coupling circular electrical connector receptacle designed for aerospace, avionics, and industrial platforms. It conforms to GJB598 Series 2 / JY3470 requirements and is interchangeable with the MS3470A20-39PN designation used in MIL-DTL-26482 Series II supply chains.

This Class A narrow-flange panel receptacle features shell size 20, insert arrangement 20-39 (39 contacts), pin contacts (P), and normal keying (N). The design supports environment-resistant sealing, scoop-proof bayonet mating, and removable crimp contacts for reliable signal and power interconnect.

Product Features

• Conformant to GJB598 Series 2 JY3470 (equivalent to MIL-DTL-26482 Series II / MS3470)
• Interchangeable with cross-reference part number MS3470A20-39PN
• Bayonet quick-coupling for fast, vibration-resistant mating
• Narrow flange panel-mount receptacle for front-panel installation
• Class A shell finish (black anodized aluminum style)
• Pin contact configuration (P) with insert arrangement 20-39: typically 2 x #16 + 37 x #20 contacts
• Normal keying (N) for standard polarization and anti-mismatch mating

Technical Specifications - JY3470A2039PN

Part Number Breakdown

Related options: JY3470L2039PN / MS3470L20-39PN uses electroless nickel finish (L); socket versions use S contacts; alternate keying uses A–W positions as applicable. Wide-flange and jam-nut receptacles are covered by JY3472 / JY3474 families. There is no functional difference between JY3470 and MS3470 prefixes for form-fit-function mating within the same Series II family.

Compatible Applications

The JY3470A2039PN narrow flange receptacle is intended for platforms that require compact, environment-resistant bayonet interconnects with high contact count. 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 GJB598 / MIL-DTL-26482 Series II interfaces

Selection Guide

Installation Notes

• Verify shell size, insert arrangement, contact gender, finish class, and keying before mating.
• Use the correct crimp tooling for #16 and #20 contacts specified by arrangement 20-39.
• Mount the narrow flange securely to the panel and keep sealing surfaces clean.
• Cap unused receptacles to protect the interface when not mated.
• Select matching plug and cable accessories compatible with MIL-DTL-26482 Series II / GJB598 Series 2 interfaces.

Why Choose JY3470A2039PN

Form-Fit-Function Compatibility

Choosing JY3470A2039PN ensures form-fit-function compatibility with MS3470A20-39PN supply chains while meeting GJB598 Series 2 requirements. The narrow-flange bayonet receptacle geometry supports fast mating, environmental durability, and reliable multi-circuit interconnect in aerospace and industrial systems.

Ordering Information

Order by the GJB598 designation JY3470A2039PN (also written JY3470A20-39PN), or cross-reference as MS3470A20-39PN, depending on your procurement standard. When requesting a quote, please confirm mating plug part number, contact plating, mounting panel cut-out, and required quantity.