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A precision 4 mm male banana plug component for OEM test leads, test equipment and custom electrical connection assemblies.
A precision 4 mm male banana plug component for OEM test leads, test equipment and custom electrical connection assemblies.
The inner copper pin measures Ø3.05 ± 0.02 mm, while the surrounding spring contact structure is designed to mate with compatible nominal 4 mm banana sockets.
| Specification | J.10013 |
| Product | 4mm Banana Plug Metal Component |
| Model | J.10013 |
| Connector Size | Nominal 4 mm banana interface |
| Body Material | Copper |
| Copper Pin Diameter | Ø3.05 ± 0.02 mm |
| Contact Length | 12.3 ± 0.05 mm |
| Rear Thread | M4 |
| Overall Length | Approx. 26.95 mm |
| Rated Voltage / Current | 1000V / 32A |
| Contact Resistance | ≤0.005Ω |
| Insulation | None – metal component |
| Surface Finish | Multiple options available |
| OEM Assembly | Available |



The J.10013 is the conductive metal component of a 4 mm male banana connector. Unlike a finished insulated banana plug, this version consists of the metal contact and threaded termination structure, allowing it to be integrated into different connector housings or custom test lead assemblies.
The copper pin within the mating section measures Ø3.05 ± 0.02 mm, while the surrounding spring contact structure is designed to mate with compatible nominal 4 mm banana sockets.
Its M4 threaded rear section also makes the component suitable for OEM designs where the metal connector must be mechanically integrated into a housing or cable termination.
For banana connectors, the nominal “4 mm” description alone does not completely determine mating performance. Contact diameter, spring geometry, insertion length and socket construction all influence the actual connection.
For J.10013, the key mechanical dimensions include:
For OEM applications, we recommend checking the mating socket and housing dimensions before volume production.

J.10013 uses a copper body combined with a spring-style 4 mm contact structure.
When inserted into a compatible banana socket, the spring section provides radial contact pressure against the socket surface. Maintaining sufficient contact force is important because electrical connection quality depends not only on nominal current rating, but also on the stability of the contact interface.
The structure therefore combines electrical conduction, mechanical engagement and repeatable plug-in connection in a compact component.
J.10013 can be manufactured with different surface finishing configurations according to the application and purchasing requirements.
The product images show examples of different finishing combinations, including a full gold-colored finish and a version using a different finish on the spring contact area.
Surface treatment should be selected according to factors such as contact requirements, mating cycles, environmental conditions and project cost.
For OEM orders, please specify the required plating before quotation and sample confirmation.
The J.10013 manufacturer specification lists the metal component at 1000V / 32A.
This rating describes the component specification and should not be interpreted as a CAT III or CAT IV safety rating for a finished test lead.
The allowable voltage and current of a complete cable assembly also depend on the cable conductor size, insulation system, connector housing, termination method and the other connector used in the assembly.
For this reason, QSNTECH evaluates the complete connection system when J.10013 is used in an OEM test lead.
Not necessarily.
J.10013 features a nominal 4 mm banana interface. Its inner copper pin measures Ø3.05 ± 0.02 mm, while the surrounding spring contact structure provides the mating contact with compatible 4 mm banana sockets. Actual mating performance can still vary depending on socket geometry, contact structure, manufacturing tolerances and wear.
Actual fit can also be affected by:
For equipment-specific OEM projects, sample mating tests are recommended before mass production.
J.10013 is particularly suitable as an OEM connector component for:
Because J.10013 is supplied as a metal component, the suitability of the finished connector or cable assembly should be evaluated according to its complete construction and intended application.
QSNTECH can supply J.10013 as a connector component or integrate it into a complete customised test lead.
For OEM projects, we can evaluate:
To evaluate your project, send us the required quantity, cable specification, length, mating connector and electrical requirements.
Q: J.10013 is a 4 mm male banana plug metal component with a copper body, M4 rear thread and Ø3.05 ± 0.02 mm Copper Pin Diameter.
Q: The manufacturer’s specification lists J.10013 at 1000V / 32A. The rating of a finished test lead depends on the complete cable and connector construction.
Q: No CAT III or CAT IV rating is specified for J.10013 in the manufacturer’s product specification. The listed 1000V rating should therefore not be interpreted as a CAT safety rating.
Q: J.10013 uses a nominal 4 mm interface, but actual compatibility also depends on socket geometry, tolerances, contact structure and insertion depth. Sample testing is recommended for OEM applications.
EN: The manufacturer specifies the J.10013 body material as copper.
Q: Yes. J.10013 can be evaluated for customised test lead assemblies with specified cable length, conductor size, insulation, connector configuration and other OEM requirements.
