Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) 小林 光男 and 玉置 正恭 and 北郷 薫,Relationship between tensile characteristics and hardness of thread-rolled bolts.,Journal of the Japan Society for Precision Engineering,09120289,The Japan Society for Precision Engineering,1992,58,1,117-119,https://cir.nii.ac.jp/crid/1390001204763891200,https://doi.org/10.2493/jjspe.58.117