M85049/19-11W03 Backshell | MIL-DTL-85049 Strain Relief Connector Accessory
M85049/19-11W03 Straight EMI/RFI Non-Environmental Backshell for D38999 Series III / IV Connectors
The M85049/19-11W03 is a straight EMI/RFI cable backshell designed for circular electrical connectors. It is the AS85049 / GJB1784 standard part number, interchangeable with J1784/19-11W03, and is commonly used with GJB599 / D38999 Series III and Series IV connectors in shell size 11.
As an /19-type accessory, the M85049/19-11W03 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 olive drab cadmium finish (W) 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 J1784/19-11W03
- 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
- Cadmium plating finish denoted by the W suffix (olive drab)
- Clamp size 03 for cable diameters approximately 6.4 ~ 9.5 mm
Technical Specifications - M85049/19-11W03
| Parameter | Value |
|---|---|
| Part Number | M85049/19-11W03 |
| Equivalent Part Number | J1784/19-11W03 |
| Accessory Type | M85049/19 straight EMI/RFI non-environmental backshell |
| Function | EMI/RFI shield termination with cable clamp strain relief |
| Coupling Style | Spin coupling (non-self-locking) |
| Shell Size | 11 |
| Finish | W - Olive drab cadmium plating |
| Clamp Size | 03 |
| Connector Thread | M15 x 1 - 6H |
| A / D Max (mm) | 21.6 |
| Y Max (mm) | 27.9 |
| L Max, standard (mm) | 38.1 ~ 38.9 |
| Cable Entry Range (mm) | 6.4 ~ 9.5 |
| Compatible Connectors | GJB599 Series III & IV / D38999 Series III & IV / EN3645 |
Part Number Breakdown
| Segment | Meaning |
|---|---|
| M85049 | AS85049 / GJB1784 connector accessory series (interchangeable naming with J1784) |
| /19 | Straight EMI/RFI non-environmental backshell with spin coupling |
| -11 | Shell size 11 |
| W | Olive drab cadmium finish |
| 03 | Clamp / cable entry size 03 |
Related options: M85049/19-11N03 uses electroless nickel finish; longer barrel codes (A/B/C) 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 M85049/19-11W03 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
| Requirement | Recommended Accessory |
|---|---|
| Straight EMI/RFI clamp backshell, no full environmental seal | M85049/19 (this product) - M85049/19-11W03 |
| Straight cable clamp only, no shielding | M85049/38 series |
| Banding-style EMI shield termination with shrink-boot style | M85049/88, M85049/89, or M85049/90 series |
| Environmental EMI/RFI sealing backshell | M85049/78 or related environmental EMI series |
Installation Notes
- Confirm shell size 11, finish (W), 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 M85049/19-11W03
Form-Fit-Function Compatibility
Choosing the M85049/19-11W03 ensures form-fit-function compatibility with J1784/19-11W03 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 M85049/19-11W03, or cross-reference as J1784/19-11W03, depending on your procurement standard. When requesting a quote, please confirm cable outer diameter, mating connector part number, and required quantity.
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.