The threadlocker is an optimal solution for securing bolted joints. Bolted or removable joints are a universally used fastening system for an infinite number of assemblies, both in the industrial sector in general and in the automotive sector in particular.
A bolted joint is made up of two basic elements, a bolt or stud, and a nut or threaded hole, which is joined together thanks to the specific carving performed on them.
Bolted joints are present in countless objects, machines, and vehicles. This type of joint has a number of disadvantages that cause the fastening to fail over time. when subjected to stress, vibrations, impacts, loads, and/or thermal expansion.
These factors cause loss of clamping force and self-loosening, which can seriously compromise the assembly in question.
Therefore, to avoid this serious drawback, it is essential to use a fastener fixative such as LOCTITE 271 or LOCTITE 272 as a sealing element for the assembly.
What Is Threadlocker?
Bolted joints are a widely used joining system in vehicle assembly, especially in the fastening of mechanical elements and articulated bodywork components.
A bolted joint has as main elements two threaded parts (one with male thread and the other with female thread).
However, the threaded joint can only maintain its fixation overtime when auxiliary elements such as a washer and/or a threadlocker are inserted.
A threadlocker is required to ensure the durability of the joints for as long as possible and to offer high thermal and mechanical resistance.
But beyond that, today’s society demands products that are increasingly respectful of the environment and people’s health.
That is why some manufacturers market products, such as LOCTITE 271 and LOCTITE 272, which, in addition to guaranteeing the durability and effectiveness of the joints, stand out for being free of substances that are harmful to health in their composition.
These products are usually classified according to their resistance (low, medium, or high, depending on the force required for disassembly) or their viscosity, and are particularly effective in preventing relaxation and self-loosening of threads.
Liquid threadlockers, such as LOCTITE 271 and LOCTITE 272, increase the strength and durability of the joints and reproduce the factory fastening.
In addition, if there is one thing that makes these two products stand out, it is that they are completely safe for the operator.
Proof of this is that they do not include any type of danger symbol or warning or safety instructions.
These two fasteners are free of toxic products, environmentally friendly and their use does not pose any health risk.
Loctite 271 vs 272: Comparison
The properties and performance of Loctite 271 and 272, despite the fact that they are both parts of the same series, are vastly different.
Fastener Size
The most important feature of our comparison is the size of the fastener. Threadlockers are required for screws and bolts.
The viscosity and strength of the threadlocker are inversely proportional to the size of the screw. The larger the screw, the greater the adhesion of the two parts.
Loctite 271 is suitable for screws with a diameter of 3/8′′ to 1′′. As a solution, Loctite 272 can be used with fasteners ranging from 3/4 inch to 1.5 inches in diameter, allowing it to be used with a wider range of fasteners than other high-strength threadlockers.
Maximum Heat Stability
All threadlockers on the market, including Loctite 272, have maximum thermal stability of 450 degrees Fahrenheit.
Loctite 271 is less thermally stable than Loctite 272. It can withstand temperatures up to 300°F.
As a result, it loses effectiveness at high temperatures, making it unsuitable for use in hot environments.
Fixture Time
Loctite 271 has a shorter bond time than other adhesives, which means it only takes 15 to 20 minutes to fully cure.
However, Loctite 272 requires a much longer cure time, ranging from 50 minutes to a full hour, to fully cure.
Application Purpose
Loctite 271 and Loctite 272 are two different types of threadlockers. The main reason for their disparate characteristics and requirements is that they are used for a variety of diverse applications.
Loctite 271 is a versatile adhesive that can be used for the installation of shock absorber mounts, press fittings, and wheel bolts, among other tasks.
While Loctitys 272 can also be used to tighten crankshaft bolts, sprockets, shock absorbers, and other similar parts.
How To Remove Loctite
Loctite is a registered trademark of adhesives and threadlockers used to secure bolts and screws in their respective positions.
They prevent joints from shaking and loosening during strenuous exercise or while under pressure.
Due to the nature of the glue, removing Loctite brand adhesives can be very difficult if the correct removal methods are not followed.
- Using the towel, wipe any dust or dirt from the nut, bolt, or screw you wish to unscrew or remove. This is essential to avoid fire hazards.
- Keep a distance of about 5 cm between the heat gun and the Loctite bonded object.
- With the heat gun, apply heat to the area. It is best to heat the surface quickly and then move on to the next tool.
- To remove the component, use the socket wrench set or a screwdriver for leverage. Heating the Loctite adhesives causes them to break, allowing you to remove the screw or nut with standard hand tools.
Final Thoughts – Loctite 271 vs 272
Loctite 271 and 272 threadlockers are two of the strongest threadlockers available on the market today.
Loctite 272 is a great product in terms of thermal stability, as well as the screw sizes that can be handled with it.
Thanks to this comparative analysis, you will be able to identify the main differences between the two products.
