M85049/19-11N03 Straight EMI/RFI Non-Environmental Backshell for D38999 Series III / IV Connectors

The M85049/19-11N03 is a straight EMI/RFI cable backshell designed for circular electrical connectors. It is the AS85049 / GJB1784 standard part number, interchangeable with J1784/19-11N03, and is commonly used with GJB599 / D38999 Series III and Series IV connectors in shell size 11.

As an /19-type accessory, the M85049/19-11N03 provides spin-coupling retention, 360 degree shield termination, and mechanical strain relief for screened cables. It is a non-environmental EMI/RFI style (no full environmental sealing boot interface), with electroless nickel finish (N) and clamp size 03 for mid-range cable diameters.

Product Features

• Conformant to national standard GJB1784 (equivalent to AS85049)
• Interchangeable with cross-reference part number J1784/19-11N03
• Straight EMI/RFI backshell for 360 degree shield termination and strain relief
• Spin coupling design for Series III / IV connector rear interfaces
• Non-environmental style suited to screened harnesses that do not require full environmental sealing
• Electroless nickel plating finish denoted by the N suffix
• Clamp size 03 for cable diameters approximately 6.4 ~ 9.5 mm

Technical Specifications - M85049/19-11N03

Part Number Breakdown

Related options: M85049/19-11W03 uses olive drab cadmium finish; longer barrel codes (A) are available for extended length requirements. For banding-style shield termination, consider M85049/88 series. There is no functional difference between model prefixes marked "M85049" and related AS85049 designations.

Compatible Applications

The M85049/19-11N03 straight EMI/RFI backshell is intended for aerospace, avionics, and industrial platforms that use D38999 / GJB599 Series III / IV circular connectors and require shield continuity with mechanical strain relief. Typical use cases include:

• Aircraft and helicopter wiring harnesses needing 360 degree EMI/RFI shield termination
• Avionics LRUs, radar, and communication equipment
• Ground vehicles and rugged electronic enclosures
• Shipboard and industrial screened connector assemblies
• Harness designs that need clamp-style shield termination without a full environmental sealed backshell

Selection Guide

Installation Notes

• Confirm shell size 11, finish (N), and clamp size 03 against the actual cable outer diameter before ordering.
• Prepare and terminate the shield braid per the harness drawing to maintain continuous EMI/RFI conductivity through the clamp.
• Apply the recommended coupling torque; where required, add anti-loosening methods such as safety wire, thread-locking compound, or full heat-shrink over the accessory.
• Verify connector series compatibility: /19 accessories are intended for Series III / IV interfaces.
• This non-environmental EMI/RFI style does not replace a sealed environmental backshell; select a sealed EMI series when immersion or full environmental protection is required.

Why Choose M85049/19-11N03

Form-Fit-Function Compatibility

Choosing the M85049/19-11N03 ensures form-fit-function compatibility with J1784/19-11N03 supply chains while meeting GJB1784 / AS85049 requirements. The straight EMI/RFI clamp geometry supports shield continuity and cable strain relief behind Series III / IV circular connectors in aerospace and industrial interconnect systems.

Ordering Information

Order by the AS85049 designation M85049/19-11N03, or cross-reference as J1784/19-11N03, depending on your procurement standard. When requesting a quote, please confirm cable outer diameter, mating connector part number, and required quantity.