| 摘要 |
PROBLEM TO BE SOLVED: To provide a nut which has an aperture having no female screw and is engaged with a bolt having a male screw by relatively press-fitting the bolt having the male screw into the aperture having no female screw while the male screw is crushed, which can not simply weaken a bonding state with the bolt by using a general purpose tool after the nut is press-fitted and engaged with the bolt and which can be simply separated from a bolt using a special purpose tool for removing the nut. SOLUTION: A nut 11 has an aperture 113 having no female screw and is engaged with a bolt 21 by relatively press-fitting the bolt 21 having a male screw 213 into the aperture 113 while the male screw is crushed. The nut 11 is made to a truncated cone shape in which the aperture 113 having no female screw is penetrated from one top surface 111 to the other top surface 112.
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