03.01.40040 - Chipboard screw double flat head w/nibs F/T SQR#2 with cutting point zinc plated 4,0-40

Chipboard screws with Square recess drive.
Advantages
* One-hand useable (Stainless steel)
* Less slipping out of the screw (Recess connection).
* Easy turn back out (no dammage on drive head)
* Higher driving torx.(hard wood)

one-hand