MS3102A-10SL-3S is a box-mounted circular connector receptacle designed for use in junction boxes or as an integral part of equipment. This Class A connector features a solid endbell and mates with MS3106 and MS3108 plugs. The connector utilizes an aluminum alloy shell with green zinc standard or black zinc (RoHS) plating, hard plastic insulator, and silver-plated brass or copper alloy contacts. With a shell size of 10SL and coupling thread of 5/8-24UNEF-2A, it supports multiple contact arrangements and service ratings. The connector meets the performance requirements of MIL-DTL-5015 and is suitable for applications requiring reliable electrical connections in harsh environments, including aerospace, military, and industrial equipment where durability and environmental protection are essential.