EMCA’s Series A8 backshells provide robust mechanical strain relief, environmental protection, and EMI/RFI shielding for MIL-spec connector assemblies operating in demanding environments.
Series A8 backshells ensure reliable cable termination and long-term performance across aerospace, industrial, transportation, and rugged field applications.
Available in both straight and 90° configurations, Series A8 backshells feature a choice of banding / constant force spring (CFS) or single-cone termination systems, allowing fast, tool-free braid or screen attachment while maintaining consistent shielding integrity. The backshells’ durable construction supports secure cable retention, efficient routing in space-constrained assemblies, and resilience in harsh environments where high-reliability interconnect performance is critical.
With this combination of multi-series connector compatibility, hybrid plating options, and flexible termination methods, Series A8 backshells provide a reliable, cost-effective solution for interconnect systems requiring EMI mitigation, mechanical stability, and environmental sealing. They are engineered to meet the needs of engineers specifying high-performance backshells for harsh industrial, transportation, and aerospace applications.
Compatible with Polamco 91A, Glenair 440A & other popular backshells. Go to: Search for equivalent parts →
Check product lines below for delivery from stock options or call us today for pricing and availability.
| A87-535
A87-536 |
4 | 5 | 08 | KN | ||
|---|---|---|---|---|---|---|
| Basic part number | ||||||
| Shell size code |
ARefer to table A for the required Shell Size code
|
|||||
| Material and plating code |
CRefer to table C for the required Shell Finish code
|
|||||
| Cable entry size |
BRefer to table B for the required Shell Entry Size code
|
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| Option knurled coupling ring |
* Please refer to datasheets for single cone backshells.
All dimensions in mm (inch) unless specified otherwise.
| Shell Size | Shell Size Code |
|---|---|
| 08 (A) | 1 |
| 10 (B) | 2 |
| 12 (C) | 3 |
| 14 (D) | 4 |
| 16 (E) | 5 |
| 18 (F) | 6 |
| 20 (G) | 7 |
| 22 (H) | 8 |
| 24 (J) | 9 |
| Entry Size Code | ØD2 min. | ØD3 max. |
|---|---|---|
| 03 | 4.7 (0.185) | 13.9 (0.547) |
| 04 | 6.3 (0.248) | 13.9 (0.547) |
| 05 | 7.9 (0.311) | 15.5 (0.610) |
| 06 | 9.5 (0.374) | 17.2 (0.677) |
| 07 | 11.1 (0.437) | 18.7 (0.736) |
| 08 | 12.7 (0.500) | 20.3 (0.799) |
| 09 | 14.2 (0.559) | 21.9 (0.862) |
| 10 | 15.8 (0.622) | 23.5 (0.925) |
| 11 | 17.4 (0.685) | 25.1 (0.988) |
| 12 | 19.0 (0.748) | 26.7 (1.051) |
| 13 | 20.6 (0.8115) | 25.1 (0.988) | 14 | 22.2 (0.874) | 29.9 (1.177) |
| 15 | 23.8 (0.937) | 31.5 (1.240) |
| 16 | 25.4 (1.000) | 33.1 (1.303) |
| 17 | 27.0 (1.063) | 34.7 (1.366) |
| 18 | 28.6 (1.126) | 36.3 (1.429) |
| 19 | 30.2 (1.189) | 37.9 (1.492) |
| 20 | 31.8 (1.252) | 39.5 (1.555) |
| 21 | 33.3 (1.311) | 41.1 (1.618) |
| 22 | 35.0 (1.378) | 42.7 (1.681) |
| 23 | 36.5 (1.437) | 44.3 (1.744) |
| 24 | 38.1 (1.500) | 45.9 (1.807) |
| Material & Plating Code | Technical Design | ROHS / REACH Complaint | Electrically Conductive | Salt Spray Resistance (MIL Spec) | Salt Spray Resistance (VG Spec) |
|---|---|---|---|---|---|
| J | Black Hybrid finish
|
Yes | Yes | 500 hrs | 5 days cyclic |
| U | Olive drab Hybrid finish
|
Yes | Yes | 500 hrs | 5 days cyclic |
| 5 | Electroless nickel Base material: Al- alloy. |
Yes | Yes | 48 hrs | 48 hrs |
| 2 | Zinc-Nickel black
|
Yes | Yes | 500 hrs | n.a. |
| 6 | Cadmium olive drab
|
No | Yes | 500 hrs | 5 days cyclic |
| 9 | Marine Bronze Material: CuAl10Ni5Fe4 (CW307G). No additional plating. |
Yes | Yes | n.a. | n.a. |
| 1 | Stainless Steel / passivated |
Yes | Yes | n.a. | n.a. |
A MIL-DTL-26482 Series II backshell is a mechanical and electrical accessory fitted to circular connectors to provide secure cable termination, strain relief, and environmental protection. In addition to supporting the cable at the rear of the connector, it maintains continuous EMI and RFI shielding by ensuring reliable metal-to-metal contact between the cable screen and connector shell. These backshells are widely used in aerospace, industrial, and transport systems where dependable performance in harsh environments is required.
The A8 series is designed to mate with MIL-DTL-26482 Series II, MIL-DTL-83723 Series III, and MIL-DTL-5015 connectors featuring crimp, rear-release contacts (MS345X Series).
Yes. These backshells are designed to preserve full shielding performance by maintaining 360° electrical continuity between the cable braid and connector shell. Common termination methods include banding (CFS), clamp systems, or spring-based designs, all of which ensure consistent shielding performance in environments exposed to electromagnetic interference.
MIL-DTL-26482 Series II backshells are available in a range of configurations including straight, and 90° cable exits. Straight backshells are typically used where there is sufficient clearance behind the connector, while angled versions help manage cable routing in confined spaces and can improve strain relief in complex harness layouts.
EMCA Series A8 includes a comprehensive range of MIL-DTL-26482 Series II backshells, including straight banding backshells, 90° variants, and alternative termination styles. These options support a wide range of screened cable assemblies and allow engineers to select the most suitable configuration based on installation constraints, shielding requirements, and assembly preferences.
