To provide screw accessories and coloring method, enabling accurate and safe assembling and dismantling of members to be fastened by coloring to indicate difference of dismantling temperatures.
A wire rod made of a shape memory alloy is bent by forming, restored to its stored initial shape by heating, and provided with a pair of arm parts 12, 13 opened in the radial direction to be pulled out from the head of the screw. In a spacer 10 held between the head of the screw and a panel cover, coloring is performed by plating, painting and chemical composition treatment so that difference of the shape restore temperature (decomposition temperature) of a pair of arm parts 12, 13 selected according to the combination of the screw and the panel cover is differetiated.
SHINDO YOSHIO
SUGIYAMA KAZUO
TAJIMA TADASHI
YOSHIDA KAZUYA
TAKAARA HIDEO
UNION SEIMITSU KK
UNIV TOKAI
NEC TOKIN CORP
Hiroshi Ochi
Sadao Matsumura
Isamu Kakiuchi