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Hand Tools    Hand Tools      Hand Tools

Image Credit: DME Company | Leister USA | Mountz, Inc.

   

Hand tools are manually-operated tools that fit in the hand. They are used in many industries and applications to

  

  • Assemble
  • Install
  • Repair
  • Maintain

 Such items as

   

  • Machines
  • Products
  • Components
  • Equipment

Hand tools range from pliers to calipers.

    

  • Pliers have two jaws and are designed to grip objects by using leverage.
  • Calipers measure the distance between two symmetrically-opposing sides.
  • Screwdrivers are devices that fit into the head of a screw to drive the screw into the object to be fastened.
  • Wrenches are used to tighten or loosen nuts and bolts.
  • Hammers are hand tools that deliver repeated blows to an object. For example, a hammer is used to drive a nail into wood.

  

Specialty Tools

   
For every basic type of hand tool, many specialized varieties are available. For example, a standard wrench has two fixed jaws, but an adjustable pipe wrench has two serrated, movable jaws for gripping and turning a pipe. A standard hammer can be made from a common metal such as chrome, but titanium may be added to provide extra strength.

  

Controlled Pressure

 In operations where precise measurements are crucial, specialized hand tools may be used to apply specific amounts of pressure, or to precisely measure the tension being applied. For example, torque wrenches and torque screwdrivers are used to set the amount of torque applied to the tightness of the screw or bolt. This torque amount is the rotational force generated when energy is applied to the hand tool.
  

   

Video Credit: Mountz, Inc.

   

Power Source

 
Power source is an important consideration when selecting hand tools. Although most products can derive their power from the operator, other hand tools have been converted to power tools, that is, they derive their power from motors.

   

Pneumatic

Pneumatic hand tools and hydraulic hand tools are two common types of products. With pneumatic hand tools, compressed air is used to bring a greater force to the tool (e.g., a pneumatic torque wrench, an impact wrench, or air hammer).

Hydraulic

When hydraulic hand tools are used, however, the additional force is transferred to the tool from an incompressible liquid, generally oil. Hydraulic force is used to power small hand tools such as a hydraulic torque wrench.

    

Related Standards

   

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