This invention relates to {HEAD ~ a drilling screw and execution method} for fixing {TAIL ~ a gypsum board} to a thin steel plate by utilizing this drilling screw 
for fixing
This invention relates to { HEAD ~ a drilling screw and execution method } for fixing { TAIL ~ a gypsum board } to a thin steel plate by utilizing this drilling screw
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH