Loctite 262 vs 271: Which One Is Right For Your Threadlocker

Threadlockers are an ideal solution to secure bolted joints. Bolted joints are common in a variety of products, machines, and vehicles. The fastening of this type of joint is prone to failure for several reasons. When stressed, vibrational, impactive, loaded or thermally expanded.

Bolted joints consist of two essential elements, bolt, nuts, stud, or threaded hole. These two elements are connected via the carving they undergo. An infinity of assemblies can be fastened with bolted or removable joints. They can both be found in the industrial as well as automotive sectors.

Loctite 262 vs. 271: Which are the most useful? The following are two types of threadlocker that are popular. For this reason, using a thread locker is essential to prevent this serious problem. Below, let’s discuss an in-depth comparison of both.

Loctite 262 Vs. 271: The Short Version Of The Comparison

Well, I decided to write this short guide and help you out. Let’s check it out quickly.

Loctite 262Loctite 271
Fastener size: Up to 3/4″ bolts3/8″ to 1″
Maximum heat: 300°F300°F
Fixture time: Around 10 minutes10-20 minutes, cures in 24-hours
Uses: Ring gear, transmission shaft bolts, cylinder block boltsPress fits, shock absorber mounts, wheel studs
6-250 ML tubes6-250-ML bottle
Require heat to be disassembledRequire heat to be disassembled
Maximum fitting size- 3 inchLarge metal fasteners
Fluoresces under UV lightFluoresces under UV light
High to medium strengthHigh

What Is Threadlocker?

Let’s start by learning what threadlocker is and how it works. It is an excellent piece of apparatus that is used mainly to seal any space between nuts, bolts, or fitting threads. Basically, it is a thin, single-component adhesive or glue.

An example of a thread locker’s work is to secure two threaded hardware to prevent loosening, leakage, or even corrosion. There are permanent and removable adhesives available on the market- so, depending on your needs, you can select different products. Check out our comparison in the following section.

Loctite 262 vs. 271: Quick Features

262 Features:

  • It offers a high level of vibration resistance
  • Chemically resistant, Lubricant for threads
  • UV-transparent for quality control and monitoring
  • High to medium strength
  • Corrosion-proof and leak-proof seal
  • 1800 to 5000 centimeters of viscosity
  • Suitable for all sizes and shapes of fasteners
  • There is no need to adjust on-torque
  •  Reduce the cost of inventory

271 Features:

  • Threaded fasteners are sealed and permanently locked.
  • They withstand heavy shocks, chemicals, vibrations, and extreme conditions.
  • Prevents thread corrosion
  • Stopping fasteners from loosening due to vibrations.
  • Protects threads and locks them in place
  • Large bolts and studs are typically locked and sealed with the devices
  • Designed for high strength and low viscosity
  • Anaerobic curing, no mixing required
  • Fluoresces under ultraviolet light
  • Perfect price for everyone

Loctite 262 Vs. 271: In-Depth Comparison

Despite being in the same series, Loctite 262 and 271 have vastly different materials. Although similar, they offer distinctly different features and capabilities. Different applications, maximum heats, fastener sizes, and fixture times distinguish them from one another. It’s time to get to the point and see how they differ!

Fastener Size

The size of the fastener is the most crucial factor in our comparison. Bolts and screws require threadlockers.

Loctite 271 can be used with screws with a diameter of 3/8″ to 1″. The Mil-Spec Loctite 262 permanent threadlocker tightly binds fasteners up to 3/4″ (20 mm). In extreme chemical and environmental conditions, both are excellent for prohibiting corrosion and rust.

Threadlocker has an inverse relationship between the viscosity and strength of the screw. Generally, when the screw is larger, the parts can adhere to each other better.

Fixture Time

Thread locking adhesive Loctite 271 has a low viscosity, methacrylate-based formula with high resistance. Anyway, steel fixtures require 10 minutes, brass 5 minutes, and stainless steel 15 minutes as well.

This Loctite 262 adhesive fluoresces under UV light, allowing it to be monitored. This adhesive is MIL-S-46163A certified. Threadlocker Loctite 262 cures after 24 hours and has only a 10-minute fixation time.

Maximum Heat Stability

With a vapor pressure of fewer than 5 millimeters, the Loctite 262 Series thread locker adhesive achieves superior performance. The Hg content is 27 degrees C, the boiling point is 300.2 degrees F, and the specific gravity is 1.05 at 25 degrees C. For safe use, it must have a flash point more than 199.94 degrees F TCC.

Loctite 271 offers a wide range of temperature resistance, ranging from -65°F to 300°F, and some go as high as 650°F. In hot environments, it loses its effectiveness because of the lack of effectiveness at high temperatures.

Application Purpose

Threadlocker 262 from Loctite features an anaerobic cure, medium to high strength, and is also a liquid. It is used to permanently lock and seal threaded fasteners. Despite vibration, heavy shock, and chemical exposure, this threadlocker will hold strong.

This Loctite Threadlocker Red 271 is used to permanently seal threaded fasteners and lock them into place. In the absence of air, the product cures between metal surfaces that are close-fitting. Threads are protected from corrosion and rust, and shock and vibration do not cause them to loosen.

How To Remove Loctite: Detailed Instructions

Bolts and screws are secured in their respective positions with the help of Loctite adhesives and threadlockers. Under pressure or during strenuous exercise, they keep joints from shaking and loosening.

  1. You can use the towel to wipe off dust and dirt from the bolt, nut, or screw you want to unscrew. Doing so will prevent fires.
  2. The Loctite bonded object and the heat gun should be at a distance of about 5 cm.
  3. Heat up the area with the heat gun. The surface should be heated quickly to avoid damaging it.
  4. Once the surface has been heated, move on to the next tools gradually.
  5. For removing the component, you will need a socket wrench set and a screwdriver.
  6. In a heated environment, Loctite adhesives break, making it possible to remove nuts and screws using ordinary hand tools.
  7. Heat or sweat will remove threadlocker from the area from which you wish to remove it.
  8. Applying steam to the joints can be very helpful. By weakening the adhesive, it allows the fastener to be removed. It’s that simple.

Be careful. Unless the proper removal methods are followed, removing it can be challenging due to the nature of the glue.

Comparative Cost Analysis

Loctite 262 vs. 271; is there a difference in price? In the United States, Loctite 262 and Loctite 271 cost similar amounts. Depending on where you buy it, a 10ml bottle of threadlocker will cost you between $13 to $20. The cost is likely to be the same whether you choose one or the other.

Loctite 262 vs. 271: which one do you pick?

Loctite 271 and 262 are the two types of red Loctite on hand. Which one should you choose? Luckily, if an application requires Loctite 262, then using 271 will not negatively affect it. Due to its same working temperature range, you do not have to worry about it bursting at high temperatures.

However, if your application needs 271, you should use it. Since 262 is more robust and has a higher fastener rating, it cannot be substituted without risking injury.

Regardless of whether you choose Loctite 271, you will be protected. For almost all applications, 262 is a strong recommendation.


What is the strongest Loctite?

Loctite Red Threadlocker provides the greatest strength. In addition to the liquid form, this product is also available as a semisolid anaerobic. Red Loctite is extremely powerful, and they necessitate heat to disassemble.

Which Loctite for caliper bolts?

Considering red Loctite is permanent and would need plenty of torque and heat to take out, that seems highly overkill. Blue Loctite is probably a better choice if you are going to use it.

What is the difference between red and blue Loctite?

There are differences in the strength and removability of Red and Blue threadlockers. The blue Loctite thread locker is designed for easy replacement with usual tools, whereas the red is created to last longer.

How strong is Loctite 262?

With 189 psi tensile strength and a 1450 psi shear strength result in an excellent performance. A thixotropic acrylic adhesive, Henkel Loctite 262 is able to fluoresce under UV light to allow for easy monitoring, and it’s flexible to MIL-S-46163A.

Wrap Up

In the hardware world, a threadlocker is a handy tool for securing any nuts, screws, or fittings. Loctite 262 vs. 271: both of their most popular and best-selling threadlockers. You probably know how useful it is if you are into automobile maintenance.

However, Loctite continues to impress consumers despite all of these thread locker brands. Make your decision based on your needs and comfort. Each of them is excellent in quality & will perfectly fulfill your needs, no matter what they are used for. Happy gearing!

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