Shipboard Plug with 90° Strain Relief Backshell — MIL-DTL-28840, Key 1

Specifications

Part Number Decode

M28840/18AG1P1 decodes left to right. M28840/18 is the plug body with a 90° strain-relief backshell; the backshell itself is marked with the M28840/2 part number and the plug body with M28840/16, which is why a replacement plug and a replacement backshell are ordered against two slash sheets. Field A is the insert arrangement, G is the shell size, 1 is the backshell size designator, P selects pin contacts and the trailing 1 is the key position. Contact styles available across the family are P, S, F, G, D and E; key positions run 1 through 6.

Any qualified MIL-DTL-28840 connector intermates regardless of manufacturer, so a M28840/18AG1P1 plug mates the equivalent receptacle from every QPL source. The family is specified as fully intermateable and interchangeable.

Cross-Brand Compatibility

The 90° backshell exists because shipboard cable runs turn corners inside bulkhead trays. Routing a straight-backshell plug around a corner forces the cable against the connector shell and loads the contacts; the 90° strain relief takes that bend in the accessory instead. Airoadcon supplies the M28840 family with pin, socket and the seal/ground variants, kitted or unkitted, with short lead times on standard configurations.