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🔩 Lock it down like a pro — don’t let your bolts bail on you!
LOCTITE 242 Blue Threadlocker is a medium-strength, professional-grade adhesive designed for automotive and multi-metal applications. Trusted by OEMs and mechanics alike, it sets quickly in 5 minutes and fully cures in 24 hours, providing a durable, vibration-resistant hold on nuts and bolts across stainless steel, aluminum, and plated surfaces. Ideal for maintenance and repair projects, this 36 ml bottle delivers reliable performance that keeps your machinery secure and running smoothly.




| ASIN | B000XSGJKY |
| Best Sellers Rank | #23,230 in Automotive ( See Top 100 in Automotive ) #47 in Thread Lock Sealers |
| Brand | Loctite |
| Brand Name | Loctite |
| Color | Blue |
| Compatible Material | Aluminum, Metal, Stainless Steel |
| Container Type | Bottle |
| Customer Reviews | 4.8 out of 5 stars 186 Reviews |
| Full Cure Time | 24 Hours |
| Global Trade Identification Number | 00079340374775 |
| Included Components | (1) LOCTITE 242 Threadlocker | Blue, 36 ml Bottle |
| Item Form | Liquid |
| Item Package Quantity | 1 |
| Item Type Name | automotive-thread-lock-sealers |
| Item Weight | 0.14 Pounds |
| Manufacturer | Loctite |
| Material | Methacrylate Anaerobic |
| Material Type | Methacrylate Anaerobic |
| Model | 492140 |
| Number of Pieces | 1 |
| Other Special Features of the Product | Sold by Speedway Motors |
| Part Number | 492140 |
| Special Feature | Sold by Speedway Motors |
| Specific Uses For Product | DIY Projects, Repairs, Maintenance, Workshops, Garages, Outdoor Settings |
| UPC | 079340374775 |
| Unit Count | 1.22 Fluid Ounces |
| Viscosity Level | Medium |
| Volume | 36 Milliliters |
| Warranty Description | See Return Policy |
| Water Resistance Level | Not Water Resistant |
C**R
Genuine
It’s loctite. It holds screws. Good stuff
A**O
It’s blue loctite
It’s LOCTITE It keeps threaded fasteners from vibrating loose. I use this when mounting rifle scopes, RMRs, receiver sights, bolting bumpers onto my jeep, etc.
E**E
Product works
Great stuff for automotive needs. Bottle is a good size if you use it often on older car/trucks that need some hold on the bolts.
A**R
Does the Job
Does the job its supposed to do. A little pricey but i would buy again.
A**R
Locktite
Works great as always
A**R
Good product
Loctite makes a great product
J**H
Does as should
Works great
P**I
Great value for the money
We went all over to get some lock tight and found it was really expensive for the size. We were able to get the larger size off Amazon for a better price then the smaller bottles as Ace Hardware or Walmart. Best value for the money
Trustpilot
3 weeks ago
1 month ago