METHOD AND JIG FOR DISPLAYING CONFIRMATION OF BOLT FASTENING

摘要

PROBLEM TO BE SOLVED: To provide a method and a jig for displaying confirmation of a bolt fastening capable of certainly confirming a state after the fastening and preventing forgetting of the fastening in a bolt fastening work. SOLUTION: In the method and the jig for displaying confirmation of a bolt fastening, when a fastening component having a pressure sensitive ink film colored by pressurization is fastened by a fastening tool by a predetermined torque or more, a hitting device disposed in the fastening tool hits and colors the pressure sensitive ink film of the fastening component.