Loctite Threadlocker Blue 242 - Removable Thread Lock Glue for Nuts, Bolts, & Fasteners, Medium Strength Screw Glue to Prevent Loosening & Corrosion - 6 ml, 1 Pack

I’ve used Loctite Blue 242 in my home workshop for about two years now, mainly for gunsmithing projects, mounting rifle scopes, and securing accessory rails. If you work on firearms or outdoor gear subject to constant vibration, keeping screws locked in place without permanent welding is critical, and this product does the job reliably. Pros: Reliable Hold Against Recoil: Effectively locks sight screws, scope rings, and Picatinny rail mounts in place so they don't back out or vibrate loose after extended range sessions. Removable with Hand Tools: Secures fasteners tightly while still letting you break the seal and remove screws with standard hand tools without stripping heads or needing high heat. Protects Against Corrosion: Seals threads from moisture, oil, and sweat, preventing rust or seizing over long periods. Controlled Precision Applicator: The nozzle makes it easy to place a tiny single drop directly onto fine 6-32 or 8-40 gunsmithing screw threads without making a mess. Cons: Cure Time Requires Patience: Needs about 10–20 minutes to set and a full 24 hours to cure completely, so you need to let your setup sit overnight before taking it to the range. Whenever I mount a new optic or tighten down handguard screws, applying a small dab of Blue 242 to the clean threads gives complete peace of mind. It cures reliably when there's no air between metal threads, holding zero on scopes even after hundreds of rounds of heavy recoil. When it's time to swap optics or clean parts, the screws back out cleanly with firm pressure from a driver bit. If you do any level of gunsmithing, DIY firearm maintenance, or heavy-duty gear assembly, a bottle of Loctite Blue 242 is an absolute necessity on your workbench!

This 6ml Loctite Blue 242 threadlocker is my trusted pick for lawn equipment and bike bolt maintenance. This medium-strength formula stops fasteners from backing out under constant vibration and guards threads against rust and corrosion. Unlike high-strength red threadlocker, it still lets you take bolts apart later using regular wrenches for future servicing. I only apply a tiny drop on clean threads, and it cures nicely without messy overflow. The compact tube fits easily inside my tool pouch, and it won’t dry out quickly between uses. It works reliably on steel, stainless steel and plated bolts. Whether repairing ATVs, bicycles or garden machinery, this threadlocker delivers consistent performance. It’s a must-have for anyone doing DIY mechanical repairs. I will keep buying this whenever I run low

I cleaned the threads, added a small drop, and tightened the bolts before my next early start. The bottle is only 6 ml, but that was plenty for the rack hardware I had in mind. The tip made it easy to place the threadlocker on the threads instead of smearing it around, and I didn’t need much. I let it set according to the directions, then headed out. At the trailhead parking lot, I gave the crossbar a quick check while unloading my pack. The bolts stayed put on the drive home too, which made me glad I’d taken a few minutes to handle the rattle before the next trip. I like that Blue 242 holds firmly but still lets me remove the hardware later with ordinary tools. I’ll keep the little bottle in my garage drawer for rack and other small metal fasteners.

I bought this to keep the bolts on my hitch bike rack from working loose on the drive to weekend trailheads. The little 6 ml tube takes up hardly any room in my garage kit, and I only need a small dab on each clean thread. Last Saturday, after a washboard stretch of road, I checked the rack in the parking lot and the fasteners stayed snug. That made me glad I had used it before the trip. Blue 242 holds well but still lets me remove a bolt with hand tools when I need to adjust the rack. A tidy, practical tube for small fixes between hikes.

I bought this online after one bolt on our rolling laundry cart kept backing out whenever I moved a basket. As a stay-at-home mom, I’m constantly hauling laundry around, and the wobble was getting annoying. I cleaned the threads, added a little Blue 242, and tightened it. After letting it cure, the bolt stayed put through several trips across the hallway, which is what I needed. I like that I can still remove it later with hand tools if I need to take the cart apart. The 6 ml bottle is quite small, though, and the cap took me a minute to figure out. Still, a little goes a long way for small household fixes 🙂.

I bought this for my dorm because one bolt on my desk chair kept backing out after I moved in. I cleaned the threads, put a small drop of Loctite on the bolt, and tightened it again. The chair stopped wobbling during late-night study sessions, which made me glad I had it. The 6 ml bottle is small enough to keep in my desk drawer, and I only needed a little. I like that Blue 242 holds the fastener but still lets me remove it later with tools, since dorm furniture may need adjusting when I move out. It was simple to apply and did the job on that loose chair bolt.

This 6ml single tube of Loctite Threadlocker Blue 242 is my go-to for motorcycle rebuilds and regular bolt maintenance. The medium-strength formula locks nuts and bolts firmly against constant road vibration while still allowing disassembly with standard hand tools later. It seals threads to block moisture and slow corrosion, which matters a lot for bikes exposed to rain and road grime. I only need a tiny drop on clean threads, and it cures reliably without messy overflow. The compact tube tucks neatly inside my motorcycle tool roll, easy to bring on rides. It works perfectly on brake, frame and engine fasteners. This classic Loctite threadlocker prevents annoying loose bolts and saves roadside headaches. I always keep one spare tube handy and will reorder once empty.

I keep this tiny 6 ml tube of Loctite Threadlocker Blue 242 in my garage toolbox for all my DIY repairs. Vibration used to shake bolts loose constantly on my lawn mower, bike and truck accessories. Medium-strength blue threadlocker is the sweet spot for me. It locks nuts and bolts firmly and prevents corrosion on metal threads. The best part is that it’s removable with standard hand tools, unlike high-strength red threadlocker that’s nearly permanent. It sets quickly and fully cures in 24 hours. A small drop goes a long way; this little tube lasts for dozens of fastener jobs. Whether I’m working on car parts, yard equipment or outdoor hardware, this threadlocker keeps bolts from creeping loose. Essential staple for every home mechanic🔩

Does what it says on the packet - no more to add - would recommend

Shake before use.

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.

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.

It does the job, it's great. I use with my inline skate frame bolts and with some specific furniture assembling, and it works every time.