













🔧 Lock it down, loosen it up—thread security made smart and simple!
Loctite Threadlocker Blue 242 is a medium-strength adhesive designed to lock and seal metal fasteners sized 6-19mm, preventing loosening caused by vibration. It sets in 10 minutes and fully cures in 24 hours, offering reliable protection against rust and corrosion while allowing easy removal with hand tools. Ideal for small motors, mowers, and power equipment, this water-resistant formula ensures durable, maintenance-friendly fastening.






| ASIN | B000I1RSNS |
| Best Sellers Rank | #44 in Automotive ( See Top 100 in Automotive ) #1 in Thread Lock Sealers |
| Brand | Loctite |
| Color | Blue |
| Date First Available | January 16, 2007 |
| Department | Unisex-Adult |
| Full Cure Time | 24 Hours |
| Global Trade Identification Number | 00079340242005 |
| Is Discontinued By Manufacturer | No |
| Item Form | Liquid |
| Item Package Quantity | 1 |
| Item Volume | 6 Milliliters |
| Item Weight | 0.176 ounces |
| Item model number | Henkel / osi -tanch-it- |
| Manufacturer | Henkel Corporation |
| Material | Dimethylacrylate ester |
| Number of Pieces | 1 |
| Package Information | Tube |
| Product Dimensions | 4.8 x 3.4 x 0.5 inches |
| Special Feature | Strong |
| Specific Uses For Product | Threadlocker |
| Tensile Strength | 110 Pounds Per Inch |
| UPC | 079340242005 |
| Unit Count | 1.0 Count |
| Viscosity | Medium |
| Viscosity Level | Medium |
| Water Resistance Level | Water Resistant |
M**W
Awesome product
Worked great to keep the screws tightened in our bathtub faucet handles. Easy to apply! Every time we turned the water on the screws in the handles would loosen and the handles would rattle. I finally got this product, put it on the screws, tightened and let it sit over night and the screws are now solid tight and problem is solved. It has been months now and still holding strong! Thanks!
D**A
Impressed with the loctite threadlocker blue 242
Was using it to secure bolts at home and found it handy. Tried opening it one-handed and it worked smoothly. Prevented loosening and corrosion effectively. Pleased with the overall product quality and performance. Definitely a good purchase for anyone needing a reliable thread lock glue.
M**N
Use this threadlocker for everyday fixes
Apparently, it works pretty well for keeping nuts and bolts tight without any hassle. i used it on some outdoor patio furniture to prevent loosening from weather, and it stayed put. the small bottle is handy for my toolbox, and the medium strength seems just right for stuff I don’t want permanently glued. the glue’s easy to apply and comes off when I need to adjust things later. overall, i’m pleased with how it keeps everything secure while still allowing later removal.🌟
B**.
Works as expected
Good product
E**S
Strong hold, yet removable when needed
Strong hold, yet removable when needed I’ve used Loctite Threadlocker Blue 242 on everything from automotive bolts to small machine screws, and it’s one of those products you end up reaching for more often than expected. It provides a nice middle ground: strong enough to keep fasteners from loosening due to vibration or everyday use, but still removable with standard hand tools when you need to take something apart later. I recently used it on a set of bolts for an outdoor project, and even after weeks of exposure, they stayed tight with no signs of backing out. The consistency is easy to work with—just a drop on the threads goes a long way. The small 6 ml tube is convenient for keeping in a toolbox or glove compartment, and it dispenses cleanly without making a mess. It also helps prevent rust and corrosion on the threads, which is a nice bonus if you’re working on vehicles or equipment exposed to the elements. A couple of things to keep in mind: this is a medium-strength formula, so it’s not for heavy-duty applications where you need a permanent lock (for that, you’d want Loctite Red). Also, it takes a little time to fully cure, so give it that window before putting things under full load. Bottom line: A reliable, easy-to-use threadlocker that’s perfect for everyday maintenance and repairs, offering strong but removable security for nuts, bolts, and screws.
S**E
Essential Tool for Securing Small Screws
This tool is a game-changer for handling tiny screws and delicate moving parts without the fear of losing them. Perfect for firearm enthusiasts needing precision when installing sights or other components. The application is a breeze with the convenient dripper-style tube. A little goes a long way, especially with the red solution, ensuring long-lasting use. I purchased a tube years ago, frequently use it, and there's still plenty left – talk about value for money!
J**N
Works fine—little goes a long, long way. A lot can freeze your screws.
Who in the Loctite corporation decided to put the “blue” Loctite Threadlocker in red container?
R**Z
Blue locltight. Good
Blue locktight. Works well on my gun screws
A**O
Me ayudó muchos con unos tornillos del caliper de mi motocicleta, los fijó muy bien
G**H
great
L**S
Shake before use.
O**T
Colle correspondant exactement au descriptif. Elle n 'a pas coulé autour si on prend soin de mettre juste ce qu'il faut en tenant compte que cela peut déborder en appuyant pour fixer.
1**N
I am highly satisfied with this product; it is an excellent item to have readily available. I will undoubtedly repurchase it in the future. Thank you, seller.
Trustpilot
2 weeks ago
3 weeks ago