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Loctite 37418 242 Blue Medium Strength Threadlocker Tube, 6-milliliter

by Loctite
4.8 out of 5 stars 155 customer reviews
| 8 answered questions
List Price: $8.99
Price: $7.57 & FREE Shipping on orders over $49. Details
You Save: $1.42 (16%)
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6 Milliliter
  • Enter your model number above to make sure this fits.
  • All purpose medium strength threadlocker
  • Ideal for all nut and bolt applications 1/4in. to 3/4in. (6mm to 20mm)
  • Locks and seals while preventing parts from loosening due to vibration
  • Protects threads from corrosion
  • Removable with hand tools
› See more product details
37 new from $1.49
$7.57 & FREE Shipping on orders over $49. Details In Stock. Ships from and sold by Amazon.com. Gift-wrap available.

Frequently Bought Together

  • Loctite 37418 242 Blue Medium Strength Threadlocker Tube, 6-milliliter
  • +
  • Loctite 37421 271 Red Heavy Duty Threadlocker, 6-milliliter Tube
  • +
  • Loctite 38653 222 Purple Low Strength Thread Locker Tube, 6-milliliter
Total price: $22.90
Buy the selected items together

Product Information

Size:6 Milliliter

Technical Details

Brand Loctite
Item Weight 4 ounces
Product Dimensions 4.2 x 2.3 x 0.3 inches
Origin China
Item model number 37418
Manufacturer Part Number 37418
OEM Part Number 37418

Additional Information

ASIN B000FIXQXK
Customer Reviews
4.8 out of 5 stars 155 customer reviews

4.8 out of 5 stars
Best Sellers Rank #6,235 in Automotive (See top 100)
#11 in Automotive > Oils & Fluids > Sealers > Thread Lock
#54 in Automotive > Oils & Fluids > Body Repair & Restoration Chemicals > Adhesives
Shipping Weight 0.3 ounces (View shipping rates and policies)
Domestic Shipping Currently, item can be shipped only within the U.S. and to APO/FPO addresses. For APO/FPO shipments, please check with the manufacturer regarding warranty and support issues.
International Shipping This item is not eligible for international shipping. Learn More
Date First Available November 19, 2003

Warranty & Support

Warranty, Parts:PartsWarranty, Labor:Full Manufacturer's Warranty - Sold by Authorized Reseller

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Customer Questions & Answers
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Customer Reviews

Top Customer Reviews

5.0 out of 5 starsLOCTITE 242 Blue Threadlocker - The best stuff on earth for keeping things from backing out
By RatherLiveInKeyWest TOP 100 REVIEWER on October 24, 2012
Size: 6 Milliliter
Let's see...

Magpul vertical grip secured with Loctite Blue - check!

Vortex Strikefire secured within its high mount by Loctite Blue - check!

Quad rail secured in place by Loctite Blue - check!

Streamlight Polytac secured in offset mount by Loctite Blue - check!

... and so much more to come.

Loctite Blue is the perfect product to make sure that there is a no slip connection between bolts and their receivers, and it is outstanding for use with firearms as the stuff withstands the beating and vibration without a second thought. A little goes a long way, so use sparingly.

At the range two days ago, I found two set screws laying on the range floor of my lane and they were identical to the screws used to secure my AR quad rail... not a speck of a sign of Loctite Blue was on them, and I'll bet that somebody out there is not at all happy with the loose condition of their rail right now. Not gonna happen to my rigs.

If you have a need similar to what I described above, get this stuff -- you will not regret it. Highly recommended.
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5.0 out of 5 starsLoctite 242 Review
By Tuan on April 9, 2011
Size: 6 Milliliter Verified Purchase
I bought this 242 since it supersedes the Loctite Lock and Seal recommended by the Haynes repair manual.
I used the 242 to secure the M8 screw holding the shock assembly in the front forks of the Honda CX500C; considering there's a fair amount of vibration through the fork, the Loctite 242 works very well in this case.
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5.0 out of 5 starsDon't pick up a wrench without it!
By Big Jon on May 18, 2010
Size: 6 Milliliter Verified Purchase
I work on motorbikes which vibrate any nut loose in minutes. Loctite is one of those essential products I never allow myself to run out of. It prevents a nut from unscrewing...unless you want it to unscrew, then you can simply unscrew it with a little more force. The little bit of friction added by medium strength loctite is awesome. Use it on everything you ever touch with a wrench! I even carry a little tube of it in my bike tool kit.
5 Comments 15 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
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4.0 out of 5 starsThis stuff really works
By Robert H. on May 24, 2014
Size: 6 Milliliter Verified Purchase
When you actually see the liquid come out of the tube of Loctite, it looks too thin of a liquid to do anything to make the screw (or nut) any tighter. Time and the environment must make it sort of congeal because I put a very small amount of it on a screw that holds a mounting bracket on a bicycle that wiggled loose every day and I've not had to tighten it once since then. That was a couple of months ago. Good Stuff!
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5.0 out of 5 starsThis is Perfect for Pivot Screws on Folding Knives; Recommended Especially for Benchmade Balisongs and AXIS-locks
By EisNinE TOP 1000 REVIEWER on January 22, 2015
Size: 6 Milliliter
I own a Benchmade 51BK 'Morpho' Balisong and a Benchmade 'Contego' Axis-lock, and coincidentally, they both needed Loctite 'Threadlocker' 242 to keep the pivot screws from loosening. The Balisong needed threadlocker on every screw, which I only realized when one of the tiny zen-pin screws went flying amidst the flipping. If you own knives, this is the stuff you want. If you have no idea what the f*** I'm babbling about, this still might be the stuff you're looking for. It locks screws up solid, but not so solid you can't break the grip with a driver. It won't mess things up irrevocably if you apply it then realize you forgot a washer, for example. But as far as hard use, preventing screws from loosening due to vibration and shock, it's excellent.
2 Comments 5 people found this helpful. Was this review helpful to you? Yes No Sending feedback...
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5.0 out of 5 starsThe perfect thread locker to stop screws, nuts and bolts from coming off accidentally
By Alan Z on April 13, 2015
Size: 6 Milliliter Verified Purchase
Don't want screws to come out or nuts to fall off? Get Loctite. I've ben using this stuff for years, most recently to stop a screw in a office chair from falling out. Loctite holds things securely, but can be deliberately "broken" with a sharp twist of a screwdriver or wrench.

I'd call this a "medium duty" thread locker -- great for chairs, eyeglasses, gun parts, and just about anything threaded not subject to intense vibration. For example, I would use Loctite Blue on interior parts of a car, but not on screws related to the drivetrain. I find Loctite Blue to work well with metal and strong, stiff plastics. It does not make a good bond with porous materials like wood, sheetrock or concrete, or on very bendable plastics. It handles weather quite well, so you can use it for outdoor applications.

I have never had a piece secured by Loctite Blue come apart accidentally, and I've also never had problems "breaking" the Loctite to get the screw, nut or bolt out.

By the way, there is an industrial strength version, Loctite Red. However, it is extremely difficult to remove Loctite Red, so only use it in situations where you don't plan to ever remove the screw, nut or bolt.
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5.0 out of 5 starsgreat product
By Galactic13 on January 18, 2013
Size: 6 Milliliter Verified Purchase
This is the perfect strength for use on rifle mounts and scopes to ensure the screws wont back out after heavy use. The red strenght the next one up requires a torch to remove it. It is too strong for gun use. This is perfect.
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5.0 out of 5 starsGreat LOCTITE product for firearm screws and other!!!
By bwp_guardian on February 21, 2015
Size: 6 Milliliter Verified Purchase
This is a great product to use with working on rifles or other guns for seating your screws. This provides enough holding power but allows you to still unscrew the screws when needed. Please, if working on a firearm USE this product and not the red or strong loctite as that is a good way to not allow someone to get the screws out. Thank you.
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Most Recent Customer Reviews

5.0 out of 5 starsFive Stars

used on various projects

Published 10 days ago by Mike
4.0 out of 5 starsFour Stars

fine

Published 12 days ago by roll tide
5.0 out of 5 starsHANDY TIP!

Repair Clinic and E-Replacement Parts have parts. E Replacement Parts has exploded views of equipment. Stens has a FULL-LINE catalog for ALL kinds of 2 and 4 cycle equipment. Read more

Published 19 days ago by Carl W.
5.0 out of 5 starsAll gun owners need this

Added some new grips to my Tristar C-100 handgun, and one of the screws kept working itself loose after firing a few hundred rounds. Read more

Published 21 days ago by Boheeber
5.0 out of 5 starsI use this for the screws on my balisong great, got no complaints does...

I use this for the screws on my balisong great, got no complaints does it's job. There is a reason why this threadlocker is the most prefered in a lot of forums.

Published 1 month ago by RedVenom
5.0 out of 5 starsFive Stars

Pleased with order. Item was as described. Product arrived on the estimated date

Published 1 month ago by Sophia L
5.0 out of 5 starsA great product with a history of working well in difficult...

I started using Loctite products over 45 years ago and I learned how well it performed while assembling aluminum parts for instrumentation. Read more

Published 1 month ago by JJCEO
5.0 out of 5 starsFive Stars

great stuff

Published 1 month ago by jlitchie
5.0 out of 5 starsits Loctite, nothing else needs to be said.

Seriously what is there to say about loctite. its loctite. it does what loctite always does. i mean really, if your looking for loctite buy it.

Published 1 month ago by Robert C. Henderson
4.0 out of 5 starsFour Stars

Good

Published 2 months ago by Liao H.

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