Screwdriver

Screwdrive comprises an approximately cylindrical handle, which fixes to the tip of an axial shaft is shaped to fit a particular type of screw. The size and shape of handle is to be be held by a human hand. The handle and shaft allow the screwdriver to be positioned and supported and, when rotated, to apply torque. The handle are made of wood, Plastic, rubber or metal. The tip of axial shaft is made of hard metal, such as iron, steel£¬nickel£¬magnet and so on.

There are many types of screw heads, of which the most common are the slotted, Phillips, PoziDriv/SupaDriv (crosspoint), Robertson, TORX, and Allen (hex). Therefor, screwdrivers come in a large variety specification, which means the width of the screwd riverhead, to match those of screws.

Specification of Screwdriver

The typical screw driver head is slotted. It has a single slot, and is driven by a flat-bladed screwdriver. The common specification is 1.0, 1.5, 2.0, 3.0 .
Phillips screwdriver or Crosshead screwdriver is usual in life. It has a "+" shaped slot and is driven by a cross-head screwdriver, designed originally for use with mechanical screwing machines. The common specification is PH0, PH1, PH2, PH3.
The Torx screw can be see on mobile phone. Torx screwdriver common specification is T4, T6, T8.
Some mobile phone with Y screw. Tri-Wing screwdriver common specification is Y2.0, Y3.0.
Hex screwdriver common specification is H1.5, H2.0, H2.5, H3.0, H4.0.
Pozidriv screwdriver similar to Phillips screwdriver, but it has four additional points of contact, and does not have the rounded corners that the Phillips screw drive has. The common specification is PZ0.Pentacle screwdriver common specification is 1.0, 2.0.
Triangle screwdriver common specification is 2.0, 2.3.
Screwdriver has a "M" shaped slot is unusual. The specification is M2.6.

Manufacturer or Supplier of Product:

China Eastern Tape Measure Manufacturer Co., Ltd.

Relative Site (URL):

http://www.china-tapemeasure.com/screw-driver/index.htm