






🔩 Lock it down today, fix it tomorrow—thread security made effortless!
Loctite 506166 is a medium strength anaerobic threadlocker in a convenient wax-like stick form, designed for secure, removable fastening. Ideal for automotive and industrial applications, it allows pre-assembly application and is easily removed with hand tools. Trusted by OEMs and professionals alike, it prevents loosening under stress while enabling clean, precise use even in challenging overhead repairs.




| ASIN | B0053ZNMDE |
| Best Sellers Rank | #48,340 in Automotive ( See Top 100 in Automotive ) #220 in Touchup Paint |
| Brand | LOCTITE |
| Customer Reviews | 4.8 4.8 out of 5 stars (3,773) |
| Date First Available | 7 August 2012 |
| Exterior | Smooth |
| Item Weight | 27.2 g |
| Item model number | 37643 |
| Manufacturer | Loctite |
| Manufacturer Part Number | 506166 |
| Model | Loctite |
| OEM Part Number | 37643 |
| Product Dimensions | 8.89 x 1.91 x 1.91 cm; 27.22 g |
| Special Features | Strong |
| Viscosity | [AI] Medium |
K**K
When working above my head, this is my choice for thread lock, works as expected and does not leak all over.
S**E
Un tiempo estuve batallando con los tornillos de mis navajas , con tan solo un poco de loctite, quedan exelente y no se aflojan .
M**A
This Loctite Threadlocker Stick is a game-changer when it comes to securing bolts and screws in place. It's so easy to use - just twist it up like a glue stick and apply directly to the threads. No more messy liquid dripping everywhere! The medium strength formula holds everything tight without making it impossible to remove later if needed. One thing to note is that the stick format can make it a bit tricky to reach tight spaces or apply evenly on smaller screws. However, the convenience and mess-free application definitely outweigh this minor inconvenience. Overall, if you're tired of dealing with runny liquids and want a cleaner threadlocking experience, this stick is worth a try!
L**F
Bon produit facile à appliquer et fonction très bien
A**W
Excellent! less messy than the liquid and seems to perform equally well
Trustpilot
4 days ago
2 months ago