Iron golf club

An iron golf club, comprising:

• a head having, in a lower portion thereof, a sole part which has a ground-contact plane, and having, in an upper portion thereof, a top part, and a face part which has a ball-hitting surface for striking a ball, and, at one end thereof, a hosel part which is a shaft connector;
• and
• a shaft, which is connected at one end thereof to the hosel part, wherein
• when a length of the hosel part is 50 mm or longer, a value of a moment of inertia centering on an axis that passes horizontally in a toe-heel direction through the center of gravity of the head is less than 800 g·cm2.

An iron golf club, comprising:

• a head having, in a lower portion thereof, a sole part which has a ground-contact plane, and having, in an upper portion thereof, a top part, and a face part which has a ball-hitting surface for striking a ball, and, at one end thereof, a hosel part which is a shaft connector;
• and
• a shaft, which is connected at one end thereof to the hosel part, wherein
• when a length of the hosel part is less than 50 mm, a value of a moment of inertia centering on an axis that passes horizontally in a toe-heel direction through the center of gravity of the head is less than 750 g·cm2.