Features:

  • All purpose medium strength threadlocker
  • Ideal for all nut and bolt applications 1/4in. to 3/4in. (6mm to 20mm)
  • Locks and seals while preventing parts from loosening due to vibration
  • Protects threads from corrosion
  • Removable with hand tools
A great product with a history of working well in difficult applications!

I started using Loctite products over 45 years ago and I learned how well it performed while assembling aluminum parts for instrumentation. I now use it on my guns as I assemble them to prevent parts from coming loose from shock and vibration. I just put together a new AR15 build and I used it all over the gun for the accessory parts. I installed a new Magpul MIAD pistol grip, a Magpul vertical rail grip, a tactical flashlight, a Magpul front and rear MBUS set of sights, a Vortex 3X flip up scope and a Daniels Defense Omega Free floating hand guard quad rail. All of the screws and Allen head screws had Loctite applied as I did the assembly. I even applied it to the mounting screws on the Aimpoint Pro red dot sight. I like the blue Loctite as it helps to hold the screws more securely in place and helps to prevent corrosion which is important on a rifle or gun. The blue formulation locks the parts in place but you can still take the gun apart when you need to. I recommend that you not use the red Loctite on gun assembly and it is very difficult to take apart as it has a much stronger holding power. This is a great product with a proven history of working in difficult applications. I rated it at 5 stars and I recommend it to you.

Fixed my Wipers

I used this to keep the bolt connecting my wiper linkage to the motor for my car. It's a temporary fix, but the wiper service is almost $200, so this will hold me over while I prioritize other items. Wipers work as they should, though I would not rely on this longterm.

Squeaky bed/firearms

Applied this to all the bolts on a metal frame that was VERY squeaky. 3 months later and not a single squeak has been heard. I also applied this onto a Troy ambi bolt release and it has held its position with no sign or coming undone.

The perfect thread locker to stop screws, nuts and bolts from coming off accidentally

Don't want screws to come out or nuts to fall off? Get Loctite. I've ben using this stuff for years, most recently to stop a screw in a office chair from falling out. Loctite holds things securely, but can be deliberately "broken" with a sharp twist of a screwdriver or wrench. I'd call this a "medium duty" thread locker -- great for chairs, eyeglasses, gun parts, and just about anything threaded not subject to intense vibration. For example, I would use Loctite Blue on interior parts of a car, but not on screws related to the drivetrain. I find Loctite Blue to work well with metal and strong, stiff plastics. It does not make a good bond with porous materials like wood, sheetrock or concrete, or on very bendable plastics. It handles weather quite well, so you can use it for outdoor applications. I have never had a piece secured by Loctite Blue come apart accidentally, and I've also never had problems "breaking" the Loctite to get the screw, nut or bolt out. By the way, there is an industrial strength version, Loctite Red. However, it is extremely difficult to remove Loctite Red, so only use it in situations where you don't plan to ever remove the screw, nut or bolt.

Loctite ‘em all!

I am a huge rc car addit. And this thing is number one for almost every screw in my Traxxas XMaxx. Kicks, drops, jumps, bash, smash, water, sand - you name it and not a single screw fall off. Highly recommended!

Must have for Items that your life depends on!!!

Does the job well!!! Creates a lasting locked bond. Great for things that vibrate or are prone changes in G's or hard shocks like guns and tools. I've lost many nuts and bolts on chainsaws and on optics for rifles and on cameras. Good advice is this stuff seems it would be a good lubricant but beware as it hardens and then breaks apart creating a mess. So keep it away from technical and sensitive moving parts. For my rifle optics and to hold anything that expends or contracts a lot with temp I had to step up to the Red which is the tightest bond. I had to step up with the rifle optics and the screws that hold the picatinny rails and stock to the metal in rifles. With out this I am tightening screws every few shots!!!

Must Have for Anything Mounted on Firearms

Awesome for firearms. I've used it on optic mounts, lasers, lights, additional rails, side saddles and every other accessory mounted to my rifles, shotguns, and handguns. This stuff works exactly as advertised. If you're going to mount anything on a firearm then you must use Loctite 242 Blue.

Great LOCTITE product for firearm screws and other!!!

This is a great product to use with working on rifles or other guns for seating your screws. This provides enough holding power but allows you to still unscrew the screws when needed. Please, if working on a firearm USE this product and not the red or strong loctite as that is a good way to not allow someone to get the screws out. Thank you.

Excellent Product

As an automotive hobbyist, I have used Loctite for years and found it to be reliable in holding nuts and bolts together under very severe conditions. Medium strength is good for most applications.

Good stuff.

I purchased this through amazon because I was too lazy to hunt it down at our local super hardware store. I use this product for set screws and the like in RC model airplanes. A small price to pay, to avoid a very expensive crash due to a screw or nut coming loose.

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