Shipboard Plug with 90° Strain Relief Backshell — MIL-DTL-28840, Socket

Specifications

Part Number Decode

M28840/18AG1S1 differs from the P1 build only in the contact style field. S selects socket contacts; the shell, insert arrangement (A), shell size (G), backshell size (1) and key position (1) are identical, so the two parts are mechanically and electrically interchangeable and differ only in contact gender. Because M28840 is a crimp, rear-insert / front-release design, contacts and the plug body are separate line items and the gender can be set at assembly time rather than at purchase.

MIL-DTL-28840 connectors from any qualified source are fully intermateable and interchangeable, so the socket-gender plug mates the same receptacles as the pin-gender variant.

Cross-Brand Compatibility

Ordering the socket-gender plug is the normal choice when the fixed receptacle carries pins and the cable end must be protected from probe damage while unmated. The 28840 shell is scoop-proof, which prevents a bent contact if the two halves are offered at an angle, and the threaded coupling resists the vibration environment of a ship's machinery spaces. Airoadcon supplies both genders with matched backshells.