Many factors are to be considered to ensure selecting the correct threadlocker for your application.
Threadlockers are available in
low strength ( purple ),
medium strength ( blue ), and
high strength ( red ). The
blue threadlocker is typically the most common threadlocker sold today. A
blue threadlocker is to be used when on bolts up to 3/4" in diameter. Bolts applied with medium strength blue threadlockers can removed with hand tools and can be reapplied. Just a few drops of a blue threadlocker keeps fasteners locked down until the user wants to remove it.
[caption id="attachment_547" align="aligncenter" width="255" caption="Medium Strength Blue Threadlocker"]

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