THE BEST SIDE OF TYPES OF SCREW HEADS

such a screw can be a non-structural fastener. It is meant being tightened and loosened by hand using the ridged sides. Some are also created by using a essential-like flat side or fashioned for flat or Phillip head screwdrivers. This sq. recess screw generate is similar to typical sq. recess screw drives with just one vital addition a little pin