ITT Cannon Connector Selection Guide | D38999, CA, MDM
ITT Cannon Connectors Selection Guide
ITT Cannon manufactures harsh-environment connectors for aerospace, defense, rail transportation, heavy equipment, industrial automation, medical equipment and energy systems. Its portfolio includes MIL-DTL-38999-style circular connectors, MIL-DTL-5015-derived power and signal connectors, MIL-DTL-83513 Micro-D connectors, miniature circular connectors and sealed plastic connectors.
Choosing an ITT Cannon connector requires more than selecting the number of contacts. Engineers and buyers must also confirm the applicable standard, shell size, insert arrangement, plug or receptacle style, pin or socket contacts, termination method, coupling mechanism, keying position, plating and environmental requirements.
This guide compares the main ITT Cannon connector families and explains how to identify a suitable series and part number.

Main ITT Cannon Connector Series
| Series | Connector type | Standard or design basis | Main selection advantage | Typical applications |
|---|---|---|---|---|
| KJL, KJ, KJA/KJB | Circular | D38999-style Series I, II and III | High contact density, environmental sealing and vibration resistance | Avionics, radar, military communication and aircraft systems |
| CA Threaded | Circular | Derived from MIL-DTL-5015 | Wide range of power and signal contact arrangements | Motors, industrial machinery, defense equipment and control systems |
| CA Bayonet | Circular | VG95234 | Quick reverse-bayonet coupling | Rail, military vehicles and industrial equipment |
| KPT, KPSE, KPTC | Miniature circular | MIL-DTL-26482 Series I and VG95328 | Compact size and quick bayonet coupling | Instruments, military electronics and industrial control |
| MDM Micro-D | Micro rectangular | MIL-DTL-83513 | High contact density in a small and lightweight package | Spacecraft, avionics, radar, test equipment and compact electronics |
| MKJ | Miniature circular | Multiple military-style configurations | Reduced size and weight with several coupling options | Soldier systems, UAVs, avionics and portable military equipment |
| APD | Plastic circular | Harsh-environment industrial design | Lightweight housing with power, high-voltage and signal configurations | Construction machinery, commercial vehicles and industrial equipment |
| VEAM CIR/FRCIR | Industrial circular | Transportation and industrial configurations | Rugged power and signal connections for exterior exposure | Rail vehicles, transportation infrastructure and heavy industry |
KJL, KJ and KJA/KJB D38999-Style Connectors
ITT Cannon divides its 38999-style circular connector range into:
KJL: D38999-style Series I
KJ: D38999-style Series II
KJA and KJB: D38999-style Series III
The KJA and KJB families use threaded coupling and are commonly selected for high-vibration aerospace and defense applications. They are available in multiple shell sizes, contact arrangements, material options, finishes and keying positions.
Typical searchable part numbers include:
KJA6T11F35PN
KJA6T13F35PN
KJA6T15W35PNL
KJA6T19W32SAL
KJA6T25F35SN
KJA7T25W42SN
D38999/26FJ19PB
D38999/20FJ24BN
Choose this family when the equipment specification calls for a D38999-style connector, compact circular construction, high contact density or a threaded connector suitable for vibration-prone environments.
Before ordering, confirm whether the required number is an ITT Cannon KJA/KJB commercial part number or a complete MIL-DTL-38999 slash-sheet number. Similar shell sizes do not automatically make two connectors interchangeable.
ITT Cannon CA Threaded Connectors
CA Threaded connectors are derived from MIL-DTL-5015-style designs. They are commonly used for power, control and signal connections in industrial machinery, motors, defense equipment and transportation systems.
Common connector styles include:
CA3100: Wall-mount receptacle
CA3101: Cable-mount receptacle
CA3102: Box-mount receptacle
CA3106: Straight plug
CA3108: Right-angle plug
Popular CA and CA-B part numbers include:
CA3106E18-1P-B
CA3106E20-29S-B-02
CA3102E10SL-3S
CA3102E14S-6S
In a part number such as CA3106E20-22S-B-F80, the fields identify characteristics including the connector style, environmental class, shell size, insert arrangement, socket contact configuration and product modification. Every field must be checked against the ITT Cannon catalog before confirming a replacement.
CA connectors are often considered when replacing or sourcing connectors based on MS3100, MS3101, MS3102, MS3106 and MS3108 configurations. However, compatibility must be verified by comparing the full insert arrangement, coupling interface, contact type, orientation, termination and mounting dimensions.
ITT Cannon CA Bayonet Connectors
CA Bayonet connectors are designed around VG95234 requirements and use reverse-bayonet coupling. Compared with a threaded connector, the bayonet mechanism allows faster mating and provides a positive locking connection for equipment exposed to vibration.
CA Bayonet is suitable for:
Railway equipment
Military vehicles
Construction machinery
Industrial drives
Control cabinets
Power distribution equipment
When selecting a CA Bayonet connector, check whether the required product is a cable plug, panel receptacle or cable receptacle. The backshell, cable clamp, contacts and sealing accessories may need to be ordered separately.
ITT Cannon KPT, KPSE and KPTC Connectors
The ITT Cannon KP family consists of miniature circular connectors designed around MIL-DTL-26482 Series I and VG95328 requirements.
The main differences are:
| Series | Contact termination | Main characteristic |
|---|---|---|
| KPT | Solder contacts | Pre-installed contacts for conventional solder termination |
| KPSE | Crimp contacts | Removable crimp contacts with a retention system |
| KPTC | Crimp contacts | Miniature quick-disconnect bayonet design |
Representative part numbers include:
KPT02E16-26S
KPSE01F12-10S
MS3116F12-3P
MS3112E12-3S
KPT is suitable when solder termination is preferred. KPSE is normally more convenient for production harness assembly, contact replacement and field maintenance because it uses crimp contacts.
Do not select between KPT and KPSE only by contact count. Confirm the shell style, insert arrangement, contact gender, mounting method and accessories required by the cable assembly.
ITT Cannon MDM Micro-D Connectors
ITT Cannon MDM connectors are designed for applications requiring high contact density, low weight and limited installation space. The broader Micro-D range supports eight shell sizes with configurations from 9 to 100 contacts, together with selected power, coaxial and mixed-contact arrangements.
Available product types include:
Cable-mounted Micro-D connectors
PCB vertical-mount connectors
PCB right-angle connectors
Connectors with discrete wire leads
High-temperature versions
Hermetic Micro-D connectors
Filtered Micro-D connectors
Mixed power and coaxial configurations
Versions with integrated backshells
Popular MDM part numbers include:
| Part number | Basic configuration |
|---|---|
| MDM-9SSB | 9-position receptacle with socket contacts |
| MDM-9PSM7 | 9-position plug with pin contacts |
| MDM-9PSK | 9-position plug with pin contacts |
| MDM-9SL2P | 9-position receptacle |
| MDM-9PH006P | 9-position plug cable assembly with discrete leads |
| MDM-9SH003B | 9-position socket cable assembly with discrete leads |
| MDM-15PCBR | 15-position right-angle PCB plug |
| MDM-15PH003P | 15-position plug with discrete wire leads |
| MDM-15PH006B | 15-position plug with discrete wire leads |
Select MDM when a conventional D-Sub connector is too large or heavy. For PCB versions, verify board orientation, mounting hardware, termination length and connector height. For discrete-wire versions, confirm wire length, wire gauge, insulation type and shielding requirements.
ITT Cannon MKJ Miniature Circular Connectors
MKJ is a compact circular connector family developed for size- and weight-sensitive aerospace and defense systems. ITT Cannon offers several locking and coupling methods within the MKJ range, including:
UN thread coupling
Double-start threaded coupling
Triple-start threaded coupling
Bayonet coupling
Breakaway coupling
Clip-lock coupling
MKJ connectors are suitable for:
UAV electronics
Soldier-worn systems
Secure communications
Navigation equipment
Portable military electronics
Compact avionics
High-speed data connections
The required coupling method should be selected according to the maintenance environment. Threaded coupling provides secure retention, while breakaway and clip-lock versions are useful where rapid disconnection is required.
MKJ is not automatically interchangeable with a standard D38999 connector. Shell dimensions, coupling interfaces, keying and contact arrangements must be evaluated separately.
ITT Cannon APD Connectors
APD is a sealed plastic connector family for harsh industrial and transportation applications. The range includes configurations from 1 to 51 positions and supports power, high-voltage and signal connections.
Main APD configurations include:
1-way high-power
2-way high-power
4-way high-voltage
4-way standard
6-way and 7-way
19-way
37-way
51-way
APD connectors are commonly used in:
Construction equipment
Agricultural machinery
Commercial vehicles
Material-handling equipment
Industrial power systems
Vehicle sensors and controllers
Choose the APD cavity arrangement according to conductor size, current, voltage and signal count. Also verify the required coding, secondary lock, sealing components, contacts and wire seals.
APD connector housings, contacts and accessories may be supplied as separate items. The complete bill of materials should therefore be checked before placing an order.
ITT VEAM CIR and FRCIR Connectors
VEAM CIR and FRCIR are rugged circular connector families intended for transportation and industrial environments. They are particularly suitable for exterior rail applications where connectors may be exposed to vibration, moisture and repeated maintenance.
Typical applications include:
Rail vehicle-to-vehicle connections
Railway control systems
Passenger information systems
Ethernet and video transmission
Train power distribution
Exterior industrial equipment
Heavy transportation systems
For railway projects, confirm not only the electrical rating but also the applicable rail qualification, fire and smoke requirements, sealing, cable construction and installation accessories.
ITT Cannon Connector Stock and RFQ Support
DataStorageIC supplies ITT Cannon circular connectors, Micro-D connectors, contacts and accessories for aerospace, defense, railway and industrial applications.
Please provide the complete manufacturer part number, required quantity, target delivery date and any necessary traceability or qualification requirements. Contact us to check stock, lead time, datasheets, mating connectors and cross-reference options.



