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Mechanics Power andSpecialty Tools

Identify and describe its purpose

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Straight Shank Twist DrillUsed to cut holes into metal or wood. If used onhard steel and at high speeds, it should be made

of high speed steel.

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Drill Press

Used to drill holes inMaterials using a twist

drill

.

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Bottoming TapWidely used in machine oper ations to complete a thread in a

 bottom of a hole. On the shaft of the tap it will state if it is NF

(Fine ) or NC (Cour se) threads as well as the size.

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Plug TapUsed to cut threads in

machine oper ations. The tapered for m gr adually cuts the 

threads in the hole. On the shaft of the tap it will state if it is NF(Fine ) or NC (Cour se) threads as well as the size.

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Tap Wrench / Handle ³T´  type tap wrenches have an adjustable chuck. A

simple handle will have a V shape that clampsonto the tap.

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SAE (NF) DieUsed to cut Society of Automotive Engineers of 

National Fine (NF)Threads on bolts.

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USS (NC) DieThe die cuts the male thread of a bolt or  r od. USS (United 

States

Standard) also called National Cour se (NC) thread..

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Die StockUsed as a handle for  either  SAE (NF) or  USS (NC) dies.

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HacksawSaw used to cut metals. Rated in teeth per  inch (ty pically 

14teeth per  inch). The handle nor mally has a pistol ty pe gri p.

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Stud / Screw Extractor (Easy out)A hole is drilled in the center of the br ok en stud or screw, and the 

extr actor screwed into the hole in a counter clockwise direction.Also

called an easy out.

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Angle (portable) ± Pedestal GrinderAngle Grinder (left side) -Available in sizes f r om 2 to 9 inch. May be 

used with a grinding, sanding, or wire br ush wheel.

Pedestal Grinder (right side) Used for shar  pening and removing

material. Stones are classif ied by diameter , width, and coar seness (i.e.

1" x 6" 80 grit).

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Tube Flaring kitUsed to mak e f lared ends for soft tempered tubing. Ty pically in Br ak e,

air conditioning and power steering systems.

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Tubing CutterTighten the handle until the cutting disc touches the tubing then spin and 

gr adually tighten handle as spinning until disc cuts thr ough tubing. Too

much pressure on the handle may cause the cutting wheel to break.

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Tube / Pipe ReamerThis ty pe of reamer cleans the burr s off of the end of a cut tube. Can be 

supplied with bit br ace shank, r ound

shank, or ³T´ handle..

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Tube / Pipe benderThis enables a technician to mak e accur ate 45 and 90

degree bends. Bender may be designated for tubing or 

rigid conduit.

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Compression Gauge / TesterThe gauge tells you the compression in the combustion cylinder of a

vehicle. The br ass threaded end usually is adaptable to sever al diff erent

sizes and threads into the spar k plug hole located in the cylinder head.

Ranges f r om 0 to 300 pounds per square inch.

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Lever type Grease GunIt is f illed by hand, car tridge, or f r om an air pressure gun with various

diff erent ty pes of grease to lubricate the various f riction points mainly 

found in the drive tr ain and steering systems.

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Lever type Grease GunIt is f illed by hand, car tridge, or f r om an air pressure gun with various

diff erent ty pes of grease to lubricate the various f riction points mainly 

found in the drive tr ain and steering systems.

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Impact Wrench (right side)Driven by air pressure (60-100psi) so needs to be connected to an air  

compressor (left side). R equires the use of special black impact sock ets

that are designed for use with impact wrenches.Available in 3/8, 1/2 and 

¾ inch drive. Usually requires a couple of dr ops of air compressor oil in 

the inlet for  lubrication.

 

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VisesMachinist or Bench Vise (left side) -A bench mounted vise for metal 

with a swivel base and re placable jaws. It should not be used for  

hammering or bending metal.Also called a Bench Vise.

Drill Press Vise (Right Side) - Drilling is saf e and more accur ate when 

a vise is used, and f ewer  drill bits are br ok en. Usually held to drill press

table using clamps.

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Expansion or Adjustable Reamer 

Used for  reaming piston pin holes, k ing pin holes,

holes for water pump bushings, valve stem guides

and other precision reaming jobs.