The base code '3470W12-10' specifies a MIL-DTL-26482 Series II wall mount receptacle (3470) with an aluminum body and olive drab cadmium plating (W), a shell size of 12, and an insert arrangement of 10 contacts. The suffix 'S' specifies socket contacts. MS identifies a US aerospace/military hardware standard. Governed by the MS standard series, administered by Military Standards.