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Loctite 1330255 Blue 243 Medium Strength Threadlocker, 360 Degree F Maximum Temperature, 0.5 mL Capsule (442-1330255)

4.3 (8) Write Review
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$6.25

$ 2 .99 $2.99

In Stock

About this item

  • Trusted by Professionals: Our blue LOCTITE automotive thread locker products are not just OEM-specified, they are trusted by professionals because they are designed by auto manufacturers and lab tested (PN: 1330255)
  • Works on all metals: Works on all metals, including passive substrates such as stainless steel, aluminum, and plated surfaces; features enhanced minor oil tolerance for superior performance
  • Reliable & Durable Performance: Engineered for securing components that endure heavy shock, vibration, and extreme chemical or environmental conditions so it will requires localized heating and hand tools for easy disassembly
  • Multi-Application: Perfect for use on rocker studs, rocker adjustment bolts, bolts on valve and cam covers, oil pans, disc brake calipers, intakes and alternators, and pulley assemblies; Ideal for all nut and bolt applications ¼" to ¾" (6 mm to 20 mm)
  • Quick-setting for convenience: The product begins setting in just 10 minutes, giving you a quick start on your project, and reaches its full strength after 24 hours, ensuring a complete and durable cure by the next day and is temperature resistant up to 140 degrees


LOCTITE Automotive Threadlocker Blue 243 is a medium-strength, medium-temp, oil-tolerant adhesive designed for general-purpose automotive applications. OEM-specified and trusted by professionals, this anaerobic threadlocker bonds effectively to all metals, including stainless steel, aluminum, and plated surfaces. Its enhanced oil tolerance ensures reliable performance, even in challenging conditions. LOCTITE Blue 243 is ideal for securing components that endure heavy shock, vibration, and chemical exposure. It works perfectly on rocker studs, adjustment bolts, valve and cam covers, oil pans, disc brake calipers, intakes, alternators, and pulley assemblies. Suitable for all nut and bolt applications ranging from ¼" to ¾" (6 mm to 20 mm). The product sets in just 10 minutes, allowing for a fast start, and reaches full strength within 24 hours, providing a durable, temperature-resistant bond up to 140°F. LOCTITE Blue 243 delivers long-lasting, reliable results for your automotive repair and maintenance needs.


Michael A.
Reviewed in the United States on March 14, 2025
I used these to put a red dot on my handgun. The bolts were coming loose after 200 rounds or so before. I haven't had an issue (yet) and I have put 300-400 rounds through it.this is a one-time-use bottle. There is a little stopper to try and save the rest if there is any left over.it is not as viscous as I though it would be. Very drippy/runny.
Mike E.
Reviewed in the United States on December 25, 2024
I massage Gun was making loud noise when usingFound out it was a lose bold inside the gun that would come lose .Using this Loctite to hold the screw in place stopped the noise
Customer
Reviewed in the United States on September 1, 2020
loctite is great stuff, only needed a little bit, and am not a craft DIY guy by any means...just wish there was an 2-pack option that saves you money a bit
Danny Jones
Reviewed in the United States on August 28, 2020
Loctite perfect size. If surface prep correctly, will protect from vibration issues.
Brandon Deerwester
Reviewed in the United States on August 14, 2020
Obviously, it's small. The other reviewers need to read descriptions. It does it's job if you only need it for a bolt or two
Dan
Reviewed in the United States on April 1, 2019
It does what it is supposed too.
JEMadsen
Reviewed in the United States on May 24, 2017
Works great.
John R.
Reviewed in the United States on December 9, 2016
Great stuff. this is a small bottle though.