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MIL-DTL-38999 Series III circular connector with 128 crimp pin contacts, straight plug, threaded coupling.
The TE Connectivity D38999/26WJ35PN is a MIL-DTL-38999 Series III circular connector designed for high-density military and aerospace applications. Featuring a straight plug style with 128 crimp pin contacts, this connector offers robust electrical connectivity and reliable mechanical locking via its threaded coupling mechanism. The connector is engineered for harsh environments, ensuring resistance to vibration, shock, and environmental contaminants. Widely used in biotechnology instrumentation and molecular diagnostics equipment where durable, high-performance interconnects are critical, it supports complex wiring harnesses in clinical and bioprocessing devices. This connector facilitates secure signal transmission in biomanufacturing instrumentation and is essential in synthetic biology research platforms requiring precision electrical connections.
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With a service contract, ten to fifteen years is normal for most benchtop instruments. Detectors and pumps are the parts that wear first.
Often, yes. Verified suppliers frequently work with service partners converting the instrument. If applicable, we can list servicing options alongside the offer.
Ask a scientist through the request button. Parts are often available even when the instrument itself is discontinued.
Two to six weeks, depending on refurbishment scope and whether calibration is included.
We ship to 38 countries. Crating and customs handling are quoted with the instrument.
Tell us what you need and a scientist finds it for you, usually within the hour.
Last updated 23 October 2026
The middle half of the 324 with a price runs from €80 to €520.
