NOT KNOWN DETAILS ABOUT TYPES OF SCREW HEADS

Fillister head screws are generally slotted tools fasteners that has a big oversized head. It can be used to connect metallic and Wooden. Hex heads are characterized by their hexagonal condition, intended to be pushed by a wrench or socket. This style and design permits significant torque software, earning them a go-to choice for weighty-responsib

Shaft or Barrel: Connecting your body to the pipette tip, the shaft or barrel may have a smooth surface area or textured grip for relieve of managing. Named following Louis Pasteur, these very simple pipettes are used for transferring modest amounts of liquids. they don't seem to be calibrated for certain volumes but are helpful for common labora