Crimp contact and gas sensor

A crimp contact (5) includes a wire hold portion (5a) crimped onto and holding therein core wires (16) of an electrical lead (14). The wire hold portion has a bottom wall (5b) and a pair of side walls (5c) bent in such a manner as to bring ends (5d) of the side walls into contact with each other to define a wire accommodation space and satisfies the following equations: {(W1 - W2)/2}/W3 ‰¤ 1.2 and H2/H1 ‰¥ 0.5 where W1 is a maximum width of the wire hold portion; W2 is a maximum width of the wire accommodation space; W3 is a minimum thickness of the bottom wall; H1 is a maximum thickness of the wire hold portion; and H2 is a maximum distance from an outermost point of the side wall to a tip point of the side wall end along a thickness direction of the wire hold portion.