THE BOLT WHICH IS CAN DISTINGUISH THE BENDING STATUS AND THE METHOD TO DETERMINE THE BENDING STATUS

摘要

PURPOSE: A bolt capable of confirming a warp state and a method thereof are provided to form a cylindrical channel unit inside of the bolt and irradiate lights and confirm a shape in which the lights are shone is confirmed so that a bolt inspection is simplified and the maintainability of an aircraft is improved. CONSTITUTION: A bolt(1) capable of confirming a warp state comprises a bolt head unit(100) and cylindrical screw unit(200). The screw unit is projected from the center of the bolt head unit in a longitudinal direction and a screw thread is formed in the outer circumference of the screw unit. A cylindrical channel unit(300) is formed in the inside from one side end part to the other side end part in a longitudinal direction of the bolt.