Frame for contact unit and socket

A frame for a contact unit,

• a resin frame made of resin, composing a front side, a rear side, a left side and a right side at front, rear, left and right positions to surround a housing onion of the contact unit;
• a metal frame made of metal, the metal frame including:
• a bottom plate which comprises a front side, a rear side, a left side and a right side at front, rear, left and right positions to surround the housing portion, and on which the resin frame is disposed;
• and
• an inner peripheral plate and an outer peripheral plate standing in a first direction from an inner peripheral edge and an outer peripheral edge of the bottom plate respectively to cover at least partially an inner part and an outer part of the resin frame on the bottom plate;
• wherein
• the metal frame comprises at least one of the inner peripheral plate and the outer peripheral plate at each of the front side, the rear side, the left side and the right side of the bottom plate.