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🔧 Lock it down like a pro — permanent strength, removable with heat!
Loctite 271 Threadlocker is a high-strength, red anaerobic adhesive designed for permanent locking and sealing of metal fasteners up to 1" (25mm). It cures rapidly (10 min fixture, 24 hr full cure), withstands temperatures from -65°F to 360°F, and resists shock, vibration, and chemical exposure. Tested to military standards (MIL-S-46163A) and ASTM, it offers 3,000 PSI holding power and fluoresces under UV for easy inspection, making it the go-to solution for automotive and industrial applications requiring durable, reliable thread locking.









| ASIN | B004DWUN5S |
| Brand | Loctite |
| Colour | Red |
| Compatible Material | Metal |
| Container Type | Bottle |
| Customer Reviews | 4.8 out of 5 stars 1,078 Reviews |
| Full Cure Time | 24 Hours |
| Global Trade Identification Number | 00079340374799 |
| Included Components | (1) Threadlocker 271 High Strength Bottle, Red, 36-ml |
| Item Form | Liquid |
| Item Package Quantity | 1 |
| Item Type Name | automotive-thread-lock-sealers |
| Item Volume | 36 Millilitres |
| Item Weight | 0.1 Pounds |
| Item form | Liquid |
| Item package quantity | 1 |
| Manufacturer | Loctite |
| Manufacturer Part Number | 492142 |
| Material | stainless steel |
| Model Number | 37479 |
| Number of Pieces | 1 |
| Other Special Features of the Product | Waterproof |
| Special feature | Waterproof |
| UPC | 079340374799 |
| Viscosity Level | High |
M**E
He loves it!
I am a retired A.S.E. master technician and have used thread lockers many times over many years. This time I was fixing a friends revolver barrel that had come loose and was rotating. Problem solved and my buddy is once again a straight shooter.
J**.
Buena compra
Rinde mucho y es un producto y marca que cumple lo que promete
N**S
Did the job perfectly
Replacing axle nuts on my ‘06 Corvette. Locked them on the shaft easily. As recommended, waited 24 hours for the thread lock to set properly.
S**.
#271. The strongest Loctite I’ve seen.
Awesome Loctite, as advertised, this is the strongest hold I’ve seen. Don’t put it in something unless you are 100% positive you want it to stay together. This takes extreme heat to break the bond from #271.
D**Y
a little bit costly.
Very good.
Trustpilot
2 weeks ago
5 days ago