Abstract: A pipe joint includes clamp members including a pipe joint main body unit having an arc shape, flange portions protruding at both ends in an axial direction of the pipe joint main body unit, fixed flange units at both ends in a diameter direction of the pipe joint main body unit, and fixing units formed in the fixed flange units. When the clamp members are attached at end portions of pipes to be connected, and the fixing unit is inserted into insertion units, the pipe joint connects the pipes. The flange portions are provided along an entire periphery of the pipe joint main body unit, and the flange portion of one of the clamp members and the flange portion of the other of the clamp members have joint surface units that contact each other with inclinations at a same angle with respect to an axial direction of the pipe.

Abstract: A pipe joint includes clamp members including a pipe joint main body unit having an arc shape, flange portions protruding at both ends in an axial direction of the pipe joint main body unit, fixed flange units at both ends in a diameter direction of the pipe joint main body unit, and fixing units formed in the fixed flange units. When the clamp members are attached at end portions of pipes to be connected, and the fixing unit is inserted into insertion units, the pipe joint connects the pipes. The flange portions are provided along an entire periphery of the pipe joint main body unit, and the flange portion of one of the clamp members and the flange portion of the other of the clamp members have joint surface units that contact each other with inclinations at a same angle with respect to an axial direction of the pipe.

Abstract: A fastening structure includes a bolt, a nut screwed onto the bolt to fasten a target part, and a washer sandwiched between the target part and the nut. The washer is formed in a disk shape having a hole in which the bolt is inserted. The nut has a main body formed in a hexagonal pillar shape having a hole in which the bolt is inserted and a disk portion extending from an axial end of the main body. Protrusions are circumferentially distributed on a face of the disk portion, the face being on the side opposite the main body. The protrusions bite into a nut-side face of the washer to form meshed portions by screwing together the bolt and the nut.