NUT FASTENING AND FIXING STRUCTURE

摘要

PROBLEM TO BE SOLVED: To provide a nut fastening and fixing structure capable of easily obtaining the required fastening torque when fastening a nut for fixation to a cylindrical member provided with a male screw in the peripheral surface thereof and facilitated in the execution thereof without generating a looseness during a longtime use. SOLUTION: A male screw is provided in the peripheral surface of a cylinder or a column provided with a flange part 22,and the male screw part is provided with a vertical groove 21 in the axial direction, and a washer 27 provided with a vertical claw 31 to be engaged with the vertical groove 21 and a lateral claw 22 in a plane part thereof is fitted on the peripheral surface of the cylinder or the column in the condition that the vertical claw 31 is fitted in the vertical groove 21. A surface of the washer 27 opposite to the lateral claw 33 pinches a plate to be fixed between the flange 22, and a nut 29 provided with a recessed part to be engaged with the lateral claw 33 of the washer 27 in a nut surface thereof and to be screwed to the male screw is fastened to fit the lateral claw 33 in the recessed part.