Jam-Nut Receptacle, 3× #20 Socket, Shell 9, Black Zinc-Nickel

Specifications

Cross-Reference

Brand equivalents are shown in each manufacturer's own published notation. Confirm plating, keying and contact-gender suffix with our sales team before ordering.

Applications

The D38999/24ZA98SN is the jam-nut member of the MIL-DTL-38999 Series III range: a single-hole front-panel receptacle that is secured from behind with a large jam nut, so installation needs one drilled hole instead of a four-hole flange pattern. The A-98 arrangement carries 3 size-20 socket contacts in a shell 9 envelope — the low-count layout used for sensor, power-take-off and discrete signal feeds where 13 or more positions would be wasted. Class Z is black zinc-nickel: conductive, cadmium-free plating that answers both the corrosion spec and the REACH pressure on cadmium. Tri-Start threaded coupling with the internal anti-decoupling ratchet keeps the pair mated under the vibration profile of tracked vehicles and engine-adjacent harnesses, and the shell intermates with any D38999/26 plug of the same shell size, arrangement and keying.