Connector, connector assembly, and circuit device

A connector comprising:

• a housing having, a terminal holding hole formed therein, the terminal holding hole being a hole that penetrates the housing in a first direction, and
• a terminal disposed in the terminal holding hole, wherein:
• the terminal includes:
• a to-be-held portion positioned in the terminal holding hole and held inside the terminal holding hole,
• a first portion sticking out from the terminal holding hole and including a contact point configured to contact a counterpart terminal, and
• a second portion sticking, out from the terminal holding hole on a side opposite to the first portion and including a to-be-attached portion configured to be attached to a circuit board,
• an outer surface of the to-be-held portion and an inner surface of the terminal holding hole include:
• a contact region where the outer surface of the to-be-held portion and the inner surface of the terminal holding hole are in contact with each other, and
• a gap region where a space is formed between the outer surface of the to-be-held portion and the inner surface of the terminal holding hole, and
• the contact region includes a first partial region located on the second portion's side, in the first direction, of the gap region,
• wherein:
• the outer surface of the to-be-held portion includes:
• a first outer surface facing in a second direction that is orthogonal to the first direction and that is a direction along the outer surface of the to-be-held portion, and
• a second outer surface facing in a third direction that is orthogonal to the first direction and to the second direction,
• the inner surface of the terminal holding hole includes:
• a first inner surface facing the first outer surface, and
• a second inner surface facing the second outer surface,
• the first outer surface includes an engaging portion formed therein and configured to be hooked on the first inner surface, and
• the second outer surface and the second inner surface include:
• the gap region, and
• the first partial region of the contact region.