Anchor bolt

An anchor bolt configured to be fixed in an anchor hole formed in a skeleton, the anchor bolt comprising:

• a bolt main body, with a screw thread formed on an outer peripheral surface thereof, including an insertion portion that is inserted in the anchor hole;
• a tubular member that is attached to the bolt main body and includes a locking portion configured to be, in a state of being disposed in the anchor hole, locked to an inner side surface of the anchor hole, the tubular member including a smaller diameter tube portion at an end thereof, and including a tube main body portion next to the smaller diameter tube portion;
• an annular expansively openable member divided in a peripheral direction, the annular expansively openable member disposed on the smaller diameter tube portion which extends from the tube main body portion;
• and
• a push-in portion configured to expand the expansively openable member radially outward by being pushed into an inner hole of the expansively openable member, wherein
• the small diameter tube portion is disposed between an inner surface of the expansively openable member and an outer peripheral surface of the push-in portion, wherein an outer diameter of the small diameter tube portion is smaller than an outer diameter of the tube main body portion.