NOT KNOWN FACTUAL STATEMENTS ABOUT TYPES OF SCREW HEADS

This type of screw is actually a non-structural fastener. It is supposed to be tightened and loosened by hand using the ridged sides. Some are also created which has a critical-like flat facet or fashioned for flat or Phillip head screwdrivers. These are most typical screw among the all. They have cross form which will help in self centering the s