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🔩 Lock it down, but keep it flexible — the pro’s choice for lasting hold!
Loctite Threadlocker Blue 242 is a medium-strength, removable thread lock gel designed to secure 6-20 mm fasteners against vibration-induced loosening. It prevents leaks, rust, and corrosion while curing fully in 24 hours. Ideal for automotive, construction, and DIY use, it offers a reliable hold that’s easy to disassemble with hand tools, making it a must-have for professionals and enthusiasts alike.






| ASIN | B01EZTPX8A |
| Best Sellers Rank | #34 in Automotive ( See Top 100 in Automotive ) #1 in Thread Lock Sealers |
| Brand Name | Loctite |
| Color | Blue |
| Compatible Material | Metal |
| Container Type | Box |
| Customer Reviews | 4.8 4.8 out of 5 stars (42,256) |
| Full Cure Time | 24 hours Hours |
| Global Trade Identification Number | 30079340242006 |
| Included Components | Loctite - 209728 - 12pk |
| Item Form | Gel |
| Item Package Quantity | 1 |
| Item Type Name | Loctite - 209728 - 12pk |
| Item Weight | 0.1 Pounds |
| Manufacturer | Henkel Corporation |
| Material Type | Stainless Steel |
| Model | 209728-12 |
| Number of Pieces | 1 |
| Other Special Features of the Product | Vibration |
| Part Number | Loctite - 209728 - 12pk |
| Specific Uses For Product | Automotive, Construction, DIY Projects |
| UPC | 707934024200 |
| Unit Count | 12.0 Count |
| Viscosity | Medium viscosity gel |
| Viscosity Level | Medium |
| Volume | 15 Milliliters |
| Water Resistance Level | Not Water Resistant |
A**R
Works as it should. Excellent product
What else can be said about blue loctite. Use sparingly. A little can go a long way. Easy to use. Great value. Holds screws in place as it should
L**S
Helpful for quick fixes
My experience with loctite blue 242 has been pretty good. i used it at work to secure bolts in machinery, and it holds well but still allows me to unscrew when needed. the small 6 ml tube is handy, and i feel confident it prevents parts from loosening over time. overall, it’s a nice product for light to medium fastening jobs around the shop.
R**Z
Useful for bike repairs and loose bolts
X when working on my bike, the Loctite Blue 242 helps secure bolts nicely. It stays in place but still comes off when I need to remove parts later. The medium strength is just right for most jobs around the house and in the garage. The 6 ml tube is small but lasts through multiple projects. It does what I need without any hassle or mess.
K**R
Can’t go wrong with Loctite, Great product
Works as advertised, Slightly viscous so use gently, but definitely recommend.
S**N
Fixed my daughters chair where the bolt kept coming loose
Loctite Blue 242 is basically the secret sauce for anyone tired of screws slowly working themselves loose and falling out like they’ve given up on life. This stuff is the perfect middle ground: strong enough to keep things tight, but not so strong that you need a blowtorch to undo your mistakes later. I picked it up because my daughter’s desk chair kept losing its bolts. Every few days she’d sit down and the whole thing would wobble like it was auditioning for a comedy sketch. Tighten, loosen, repeat — super annoying. One tiny dab of Blue 242 on each bolt and suddenly the chair is as solid as if it came out of the box yesterday. No more surprise acrobatics. Why I like it: It just works. Simple, reliable, and zero drama. Removable without a fight. Hand tools are enough — no heat, no swearing. A little goes a long way. One tube feels like it’ll survive the apocalypse. Great for anything that vibrates loose. Perfect for chairs, bikes, small engines, you name it.
C**N
Handy bolt stabilizer for daily use
I've found the Loctite Blue 242 to be pretty handy when working on bicycles or fixing loose bolts. it keeps things in place without making it impossible to remove later. the medium strength seems just right for most tasks. the 6 ml size is convenient and lasts through several projects. overall, it does what I need without any fuss.
C**R
Great product
Had issues with knee scooter screws loosening. Product worked great from first application.
M**L
Use this threaded lock for work and travel
Since i started applying it to my bike bolts, they stay tight longer. it's nice that it’s removable if needed without much hassle. the small 6 ml bottle lasts quite a while, and it really gives me peace of mind knowing my fasteners won't come loose unexpectedly. simple to use and works well for keeping things secure on the go.
A**Y
Very nice product.it takes 24 hours to fully curate and get hardened.quality is good as per expectations.
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.
M**5
Much cheaper than buying elsewhere in shops or online even. Perfect size. Reseals well for use down the track.
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