Title:
BOLT
Document Type and Number:
Japanese Patent JP2016109285
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a bolt that can be produced at the same cost as conventional recess bolts, and achieves weight saving compared to conventional recess bolts.SOLUTION: A bolt head is provided with a recess that has a curved surface with a curvature radius of 90-110% with respect to a nominal diameter of the bolt and has a maximum depth of 20-40% with respect to a head height of the bolt.SELECTED DRAWING: Figure 1
Inventors:
MATSUSHIMA TOSHIYUKI
Application Number:
JP2014267122A
Publication Date:
June 20, 2016
Filing Date:
December 09, 2014
Export Citation:
Assignee:
MEIDOH CO LTD
International Classes:
F16B25/00; F16B35/06