Stud Extractor: Difference between revisions
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[[File:StudExtractors.png| | [[File:StudExtractors.png|300px|right]] | ||
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=====Description===== | |||
[https://en.wikipedia.org/wiki/Screw_extractor '''Stud Extractors'''] are tapered left-hand threads of different sizes made in [https://en.wikipedia.org/wiki/Hardened_steel hardened steel]. | [https://en.wikipedia.org/wiki/Screw_extractor '''Stud Extractors'''] are tapered left-hand threads of different sizes made in [https://en.wikipedia.org/wiki/Hardened_steel hardened steel]. | ||
=====Features and Applications===== | |||
If a [http://wiki.dtonline.org/index.php/Nuts,_Bolts_and_Washers#Studs '''Stud'''], [http://wiki.dtonline.org/index.php/Nuts,_Bolts_and_Washers#Bolt_and_Screw_Head_Shapes '''Bolt'''] or [http://wiki.dtonline.org/index.php/Nuts,_Bolts_and_Washers#Bolt_and_Screw_Head_Shapes'''Machine Screw'''] is sheared off inside a threaded hole, it can sometimes be removed by drilling a pilot hole down its centre then screwing in an '''Extractor'''. | If a [http://wiki.dtonline.org/index.php/Nuts,_Bolts_and_Washers#Studs '''Stud'''], [http://wiki.dtonline.org/index.php/Nuts,_Bolts_and_Washers#Bolt_and_Screw_Head_Shapes '''Bolt'''] or [http://wiki.dtonline.org/index.php/Nuts,_Bolts_and_Washers#Bolt_and_Screw_Head_Shapes'''Machine Screw'''] is sheared off inside a threaded hole, it can sometimes be removed by drilling a pilot hole down its centre then screwing in an '''Extractor'''. | ||
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Because they are left-handed, the '''Extractor''' will start to unscrew the broken [http://wiki.dtonline.org/index.php/Nuts,_Bolts_and_Washers#Studs '''Stud'''] as it tightens inside the pilot hole. | Because they are left-handed, the '''Extractor''' will start to unscrew the broken [http://wiki.dtonline.org/index.php/Nuts,_Bolts_and_Washers#Studs '''Stud'''] as it tightens inside the pilot hole. | ||
{{Threading Buyers Guide}} | |||
[[Category:Threading Tools]] | [[Category:Threading Tools]] | ||
Latest revision as of 17:17, 12 September 2016
Description
Stud Extractors are tapered left-hand threads of different sizes made in hardened steel.
Features and Applications
If a Stud, Bolt or Machine Screw is sheared off inside a threaded hole, it can sometimes be removed by drilling a pilot hole down its centre then screwing in an Extractor.
Because they are left-handed, the Extractor will start to unscrew the broken Stud as it tightens inside the pilot hole.
