| 摘要 |
PROBLEM TO BE SOLVED: To provide a fastening discriminating wrench socket capable of easily discriminating the fact of being fastened by prescribed fastening torque when fastening many bolts by using a nut runner. SOLUTION: In a wrench socket 1, a hexagonal hole 1a for inserting a head part of a bolt or a nut is formed in one end part and a square hole 1b for inserting a fastener for fastening the bolt is formed in the other end part. A fastening discriminating line 21 for detecting a turning angle for discriminating a fastening state is arranged in an outer peripheral part 1e in the axial direction of the wrench socket 1.
|
