Which side to unscrew the bolt: detailed instruction

when working with threaded connections, such as bolts and nuts, often, often. Regardless of whether you work with a car, furniture or tools, understanding the basic principles will help you save time and effort, the industrialist writes. In this article, let's look at which direction to unscrew the bolts, what are the varieties of thread, what tools to use and what to do if the bolt is stuck. Contents

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• Основний принцип відкручування болтів Exceptions: When the bolts are unscrewed clockwise
• How to Determine the Type of Thread? -toc-Page-1 EZ-TOC-HEADING-LEVEL-2 ' Class = 'EZ-TOC-Page-1 EZ-TOC-HEADING-LEVEL-2' -level-2 '> Table of Bolt Unscrewing

basic The principle of unscrewing the bolts

most threaded with ’ units work as a rule – We twist ” . This means:

• to unscrew the standard bolt, you need Twist it counterclockwise .
• To twist, you need to twist clockwise .

This rule applies to Right thread which is the most common.

Exceptions: When the bolts are unscrewed clockwise

there are situations where the bolts have left thread . In this case, they are unscrewed clockwise and twisted against. This is done to increase safety or to prevent self -cutting.

left threaded bolts can

1. Automobile technique -for example, some cars wheel nuts on the left side have a left thread.
2. gas cylinders – often use left thread to avoid false with ’ unity with others Systems.
3. Elements of equipment – In some power tools and fans, left thread is used to prevent self -tightening through the rotation of the mechanism.

how Determine the type of thread?



4. look at the marking-sometimes bolts with left thread have “ L ” or special stamp.
5. Read the documentation – the technical passport of the product often contains the following information. Right thread ; If the opposite is left .

> tools Different tools can be used to unscrew the bolts

wrench keys – standard or reconnaissance that are suitable for most situations.Hexagon keys (Hex, Allen) – used for screws and bolts with internal hexagonal recess. >

hammer and chisel – like an extreme Method when the bolt is oxide or rusty.

that Do if the bolt is not unscrewed? CLASS = “WP-BLOCK-LIST”>

Grease the thread

• Use WD-40 aerosols or other means to lubricate and clean rust. ul>
• Heating
  • Use a building hair dryer or a blow lamp for bolt heating-warmly expands metal and helps to destroy corrosion.
• Using a lever
  • Set the extension cord (pipe) to enlarge the lever.
• reverse tapping
  • easily tapping a hammer on a bolt to destroy the rust layer.
• Using bolt extractor
  • if the bolt head is thwarted, you can use an extractor-a special tool screwed into the bolt in the opposite direction and allows it to pull it out. /

Table the direction of unscrewing the bolts

Type of thread <. Th> Direction of Unscrewing Example of using

Right Thread	counter -clockwise	most bolts in equipment and construction	left thread	clockwise clockwise	the wheel nuts of the left side of the car, gas cylinders, Fans

Understanding the correct direction of unscrewing the bolts makes it easy to work with threaded with ’ unity. In most cases, the counterclockwise should be twisted, but there are exceptions where left thread is used. When working with bolts, it is important to use appropriate tools, and if they are stuck, use oils, heating or mechanical methods.
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