Some terms for Screws:
-farmer(农夫);
2001-6-4{212}(#89778@0)
1.According to the shape of drive:
a. Flat head Slot Drive Screw;(一字)
b. Phillips Drive Screw;(十字)
c. Square Socket Drive Screw;(四方孔)
d. Hex Socket Drive Screw;(六边形孔)
e. Trox Drive Screw(六角形孔)