Threadlocker Colors


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All you need to know about the difference in Red, Blue, Green and Purple Threadlockers

From heavy industrial equipment to delicate electronic components, LOCTITE® Threadlockers dramatically increase the reliability of threaded fasteners.

  • Locks against vibration & thermal expansion
  • Seals against corrosion & leakage
  • Reduces costs
  • Primerless & oil tolerant
  • High temperature performance

Removable & serviceable in every color

Easy disassembly with hand tools when using Low and Medium Strength formulas. High strength red formulas may be disassembled with localized heat and hand tools.


High Strength Permanent Red LOCTITE® Threadlockers

Learn more about red high strength threadlockers

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Medium Strength Removable Blue LOCTITE® Threadlockers

Learn more about blue medium strength threadlockers

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Low Strength (small thread) Purple LOCTITE® Threadlockers

Learn more about purple low strength threadlockers

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Preassembled Wicking Grade Green LOCTITE® Threadlockers

Learn more about green preassembled threadlockers

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Blog Post: How to Remove Loctite 2620 Red Threadlocker
One of the questions we get asked pretty frequently around here is “How do I remove LOCTITE 2620 Red Threadlocker?” While our red high strength threadlocker is considered a permanent assembly method, it can be removed if you know the right technique.
Written by: Mike Oliveira



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Industrial Manufacturing & Assembly Customers

Threadlockers designed for use on the repair and maintenance of cars, motorcycles, trucks, and marine equipment.


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