Title:
FASTENING SCREW AND TIGHTENING MANAGEMENT METHOD OF FASTENING SCREW
Document Type and Number:
Japanese Patent JP2019132409
Kind Code:
A
Abstract:
To provide a fastening screw with which an axial tension generated in the screw at the time of fastening is easily grasped, and the axial tension of the screw after fastening can be easily managed, even in a screw with a large diameter and a long length.SOLUTION: A fastening screw includes a bore (33) that is provided in a cylindrical portion (3) from a head portion (2) along the extension direction of the cylindrical portion (3), and a rod body (4) that is inserted into the bore (33), has one end fixed to a bottom surface (34) of the bore (33), and has an upper end protruded from the head portion (2). A protruded amount (D1) of the rod body (4) from the head portion (2) corresponds to an extension amount of the cylindrical portion (3) at the time when a predetermined axial tension is generated.SELECTED DRAWING: Figure 1
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Inventors:
KAMATA MASAHIRO
Application Number:
JP2018017435A
Publication Date:
August 08, 2019
Filing Date:
February 02, 2018
Export Citation:
Assignee:
HONDA MOTOR CO LTD
International Classes:
F16B31/02; F16B35/00
Attorney, Agent or Firm:
Patent Business Corporation Kushibuchi International Patent Office