MS3116F12-4P To MS3116E12-4S 4-Contact Bayonet Cable Assembly

The MS3116F12-4P to MS3116E12-4S cable assembly combines two straight bayonet plugs with different rear cable-entry constructions. The pin-contact end uses Class F strain-relief hardware, while the socket-contact end uses a more compact Class E grommet and clamping-nut arrangement.

This asymmetric configuration is useful when one side of the installation requires additional cable support and the opposite side must fit within a more restricted equipment space. It can be manufactured for control, sensor, feedback, low-current power or mixed electrical circuits.

The connector models define the physical interfaces but do not establish the finished cable length, conductor assignment or electrical function. Each assembly is built according to an approved customer pinout and cable specification.

The cable can be installed with the Class F end facing the side exposed to handling, movement or unsupported cable weight. The Class E end may be used where the harness is routed directly into protected or space-constrained equipment.

The 12-4 designation is an insert-arrangement code. It should not be interpreted as a twelve-contact connector. The arrangement contains four electrical positions.

Using Class F at both ends may add unnecessary rear hardware where installation space is restricted. Using Class E at both ends may provide insufficient mechanical support where one side of the cable is frequently handled or exposed to movement.

The mixed-service-class configuration allows each cable end to be adapted to its installation condition:

Contact positions A, B, C and D identify physical cavities only. They do not specify positive voltage, return, protective ground, signal input or signal output.

A direct cable may be wired A-A, B-B, C-C and D-D. However, the following alternatives can also be manufactured:

• Crossed contact assignments
• Partially populated two-wire or three-wire construction
• Shared power or common return circuits
• Mixed conductor gauges for different circuit loads
• Shield drain or chassis connection
• Replacement wiring matched to existing equipment

Production should be based on a customer-approved pinout table or electrical drawing. A continuity check of an existing cable may also be used when the original documentation is unavailable.

Because the two connector ends use different rear hardware, cable outside diameter must be reviewed against both assemblies. A cable that works with the Class F strain relief may not automatically provide the correct fit at the Class E clamping nut.

Class F pin end: suitable for the side where the cable may be handled, moved, suspended or exposed to repeated bending. The strain-relief hardware should be positioned so that cable load is transferred to the connector rear assembly rather than directly to the solder joints.

Class E socket end: suitable for a fixed equipment side where the cable enters a protected enclosure, cabinet or instrument and is secured by separate cable management.

This direction is not mandatory. The final orientation should follow the actual installation, available rear clearance and location of mechanical cable loads.

Both ends use an MS3116 straight-plug body. The P and S suffixes indicate pin and socket contacts; they do not mean that the socket-contact connector is a panel receptacle.

The two cable-end connectors are normally intended to mate with separate equipment receptacles rather than directly with each other. Each equipment interface should be checked for:

• MIL-DTL-26482 Series I-compatible bayonet interface
• Shell size 12
• 12-4 insert arrangement
• Complementary pin or socket contact form
• Matching normal or alternate insert rotation

Connector versions carrying a W, X, Y or Z suffix use alternate insert positioning. Complete equipment-side connector part numbers should be supplied before production whenever possible.

Inspection of this cable includes separate checks for the two rear connector constructions. The Class F end is reviewed for strain-relief fit and cable support, while the Class E end is checked for correct grommet and clamping-nut assembly.

Additional insulation-resistance, dielectric-withstanding or customer-defined inspection can be evaluated when specified before production.

The E and F suffixes identify environmental-resisting connector constructions, but they do not independently establish a fixed IP rating for the completed cable assembly.

Final environmental performance depends on the selected connector manufacturer, cable outside diameter, grommet compatibility, rear hardware adjustment, assembly workmanship, mating receptacle and fully coupled condition.

Required exposure to moisture, dust, vibration, oil, temperature cycling or outdoor conditions should be stated when requesting a quotation.

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