bing tracking image
  1. Lubricants Sealants Adhesives
  2. Loctite
  3. Nut and Bolt Sealant
  4. Sealant
  5. 0.2 oz
Loctite Threadlocker 290 - Penetrating - Green - #2 to 1/2" Nuts/Bolts - 0.20-Fl Oz Tube

Loctite Threadlocker 290 - Penetrating - Green - #2 to 1/2" Nuts/Bolts - 0.20-Fl Oz Tube

Item # LT37423
lowest price pledge
Retail:$15.77
Our Price: $8.94
You Save: 43%
Lubricants Sealants Adhesives
Orders above $99 qualify for Free Shipping
Shipping Weight: 0.02 lbs
Quantity: 
In Stock
zoom in icon
slider vertical icon
zoom out icon
Comment field cannot be left empty.
Name field cannot be left empty.

Thank you! Your comment has been submitted successfully. You should be able to view your question/comment here within a few days.

Error submitting comment. Please try again momentarily.

Product Images

Need help with installation?
Locate installers near me
This threadlocker uses a thin liquid formula to wick into the threads of pre-assembled applications, preventing treated screws, nuts and bolts from loosening. Requires heat for disassembly. Fastest Shipping and Guaranteed Lowest Prices for Loctite Threadlocker 290 - Penetrating - Green - #2 to 1/2" Nuts/Bolts - 0.20-Fl Oz Tube. Read our customer reviews of Loctite lubricants sealants adhesives. Call 1-636-306-4830 for expert service or order your lubricants sealants adhesives part number LT37423 by Loctite online at etrailer.com.
  • All Info
  • Reviews (102)
  • Q & A (0)
  • Photos
  • Why etrailer?

Loctite Lubricants Sealants Adhesives - LT37423

  • Nut and Bolt Sealant
  • Sealant
  • 0.2 oz
  • Loctite

This threadlocker uses a thin liquid formula to wick into the threads of pre-assembled applications, preventing treated screws, nuts and bolts from loosening. Requires heat for disassembly.


Features:

  • Thin liquid threadlocker penetrates pre-assembled applications to keep nuts and bolts from loosening
  • Treated threads resist corrosion
  • Assembled parts require heat to be disassembled with hand tools
  • Made in the USA


Specs:

  • Application: #2 to 1/2" (2.2-mm to 12-mm) nuts and bolts
  • Quantity: 0.20-fl oz tube (6 mL)
  • Fixture cure (time required to become tacky): 6 minutes
  • Full cure (time required to reach full set): 24 hours
  • Temperature range (endurance limits of threadlocker): -65 F to 300 F


Applications: Alternator bolts, distributor clamps and carburetor adjustment screws



The shaded areas in these diagrams indicate where this threadlocker is applied in a variety of threaded assemblies:


diagram showing placement of threadlocker


diagram showing placement of threadlocker


Applied to the threads of pre-assembled parts, this threadlocker seeps into the connections, where it hardens and keeps treated parts securely tightened, even when vibration occurs. Threadlocker also seals out air, water and grime to prevent rust or other corrosion from forming. Nuts and bolts that aren't corroded last longer and can be taken apart more easily.



This threadlocker requires heat for disassembly. (Five minutes' application of a standard soldering iron to small parts will provide enough heat; bigger parts may require a torch.) Disassemble while parts are still hot.


These diagrams illustrate the application of heat to loosen this threadlocker for disassembly of the parts:


diagram showing heating with torch

diagram showing heating with soldering iron

This threadlocker is anaerobic (hardens in the absence of air) and requires contact with an active metal to cure. Active metals (those that tarnish, corrode or rust) include brass, copper, bronze, iron, soft steel and nickel. If both parts to be joined are made of inactive materials, Loctite Klean 'N Prime primer must be applied to one of the surfaces for curing to occur. Inactive materials include plated parts, stainless steel, galvanized steel, magnetite steel, pure aluminum, titanium, magnesium, gold, silver, plastic, cadmium, Iconel, zinc, natural or chemical black oxide and anodized aluminum.


Klean 'N Prime can speed the cure rate of Threadlocker 290. This is especially helpful when you are applying the adhesive to any material, active or inactive, in colder temperatures (below 70 F). Using Klean 'N Prime primer with Threadlocker 290 requires that the parts first be treated with the primer, then assembled and adjusted, and finally, treated with the threadlocker.



OEM symbol

This product is OEM specified: It is approved to meet specifications of original equipment manufacturers.



487234 Loctite Threadlocker 290 - Penetrating - Green

Alternate part number: 37423

Replaces Loctite LT37481

Installation Details LT37423 Installation instructions


California residents: click here



Customer Reviews

Loctite Threadlocker 290 - Penetrating - Green - #2 to 1/2" Nuts/Bolts - 0.20-Fl Oz Tube - LT37423

Average Customer Rating:  4.9 out of 5 stars   (102 Customer Reviews)

This threadlocker uses a thin liquid formula to wick into the threads of pre-assembled applications, preventing treated screws, nuts and bolts from loosening. Requires heat for disassembly.

- LT37423
by:

Locktite makes very good products, and this is another one. Used for fasteners that are already assembled/torqued and it wicks into place. E-Trailer completed the order process and delivered the product as expected, so well-done to them.



- LT37423
by:

Product worked great. Used it on a sun visor that would no longer stay up. Worked perfectly, would recommend for anyone.



- LT37423
by:

Good price, fast shipping, fair postage....... What else could you ask for?


Comments
Its a good product, although it does tend to harden in the tube which is agrivating. If locktite cant correct the chemistry they could consider marketing it in single use capsules.
Chuck B - 10/29/2014


- LT37423
by:



- LT37423
by:

Great website, great prices, and appreciate the fast shipping. Thank you very much



- LT37420
by:

Review from a similar Threadlocker in Lubricants Sealants Adhesives


For the installation the instructions were good, but watching some videos made it much easier to take apart a brand new car. All went well. Installed on a 2020 Chevy Equinox 2.0



- LT37643
by:

Review from a similar Threadlocker in Lubricants Sealants Adhesives


I will never go back to liquid threadlockers. This should be the industry standard. No mess, no waste, much more control, no spilling, and countless more benefits. I use it for small screws, so it makes it much easier to apply a more reasonable amount so I don't end up stripping the torx heads when I remove them from having to put too much torque on it to remove them. My only complaint about this product is that I didn't find it sooner!


Comments
As I said in my previous review, I use this product on small screws, so I only use a little at a time. For that reason, I dont go through it very quickly, and after a year or seems to have maintained the vast majority, if not the entirety, of its effectiveness.
Jens R - 12/03/2020


- LT37418
by:

Review from a similar Threadlocker in Lubricants Sealants Adhesives


This is a really solid base plate. Installation for the Pontiac Vibe was is definitely more involved that installing the alternative (Road Master). The Road Master base plate just bolts through existing bumper holes and an engine mount. This base plate is bolted directly to the frame just behind the bumper, with four 3/8" grade 5 bolts in holes you have to drill after clamping the base plate in place. I found it easy to get the required height (3/4" below bumper) but simply using a 1x3 piece of lumber. You also have drill a 1.25"hole in the frame to gain access to the inside of the frame. Tricky part of this install is getting the nuts, which are welded to a 1" plate and a ~14" steel rods, into place to be line up with the holes. It is a little hard to see. I also recommend making sure the bolts actually thread easily on to the nuts before putting the nuts in the the frame. I had the misfortune of one of the either cross threading or jamming, and I ended up having to cut the bolt head off with a sawsall using a metal blade. The bolt had not gone very far into the nut before it jammed so I was just able to get the sawsall blade behind the head, and cut it off, holding the head with a pair of vice grips. If that hadn't worked I would have had to take the car to a shop with oxy-acetaline torch to have it cut off. I was able to fish the cut of bolt out for the frame with a bent coat hanger. The first photo is of the base plate after I cut off the bolt. Blue Ox support was GREAT! I sent them and email explaining that I needed new nuts and bolts, and they sent the needed parts (at no charge!). I just had to put my install on hold for several days. The second problem I had was in attaching the electrical harness recepticle to the tubes on the to bar. One of the self tapping screws twisted off as I was tighting it. I ended up cutting of 1/2" of the tubes (with the sawsall) and then tapping the tubes with 1/4x20 threads, and regaining the length cut off with the bolt. My recommendation to blue ox, is that they tap these tubes with to 1/4x20, and provide regular bolts to attach the recepticle. The second picture showes the result. When I showed the 3rd and 4th pictures to my mechanic, he was impressed and said, "That looks really solid!" The last picture shows the front of the car after I have started to assemble it (with the styrofoam padding on the bumper, and the draw bars in place. The solidity of the Blue Ox engineering and the FABULOUS customer support has totally turned my into a Blue Ox fan. I'm glad my RV dealer suggested that I go with Blue Ox instead of the slightly cheaper solution, that would have been much less solid.



- LT37420
by:

Review from a similar Threadlocker in Lubricants Sealants Adhesives


Bolts have not fallen off yet... lol They are all still tight.



- LT37420
by:

Review from a similar Threadlocker in Lubricants Sealants Adhesives


This stuff works! Used it to install my trailer hitch bolts.


Comments
Used on bolts for trailer hitch receiver.Still holding tight after 1-1/2 yrs.
Jeffrey - 04/08/2020


- LT1330799
by:

Review from a similar Threadlocker in Lubricants Sealants Adhesives


Good product.



- LT37420
by:

Review from a similar Threadlocker in Lubricants Sealants Adhesives


Stuff works great.



- LT37420
by:

Review from a similar Threadlocker in Lubricants Sealants Adhesives


I ordered multiple Roadmaster products from etrailer.com to rebuild a used Roadmaster Sterling towbar and prepare my car for its first time towing behind the motorhome. The etrailer people are great to work with, the prices are good, delivery is quick, and free shipping for all of my orders. The technical support at both etrailer and Roadmaster is the best.



- LT37420
by:

Review from a similar Threadlocker in Lubricants Sealants Adhesives


Juste received order



- LT37420
by:

Review from a similar Threadlocker in Lubricants Sealants Adhesives


Bought this product after watching the video how to install base plates on 2014 Honda CR-V. If you read the instructions talks about checking the bolts periodically for torque, now I don't know how many people are going to spend 4 hours pulling off the front bumper to this. So for peace of mind use this product so bolts won't come loose.



- LT37420
by:

Review from a similar Threadlocker in Lubricants Sealants Adhesives


I have used the LocTite products for many years. They make several grades of thread locking fluids, each appropriate for specific uses. Their products do exactly what they say they will; and will secure threaded parts from vibration or lock them together permanently. Your toughest choice will be in determining which product is most appropriate for your use. My recommendation is to start with the lowest strength and work you way up as needed. Just remember that without special tools, permanent means permanent with this product. The lower grades are very strong in preventing vibratory loosening.



- LT37420
by:

Review from a similar Threadlocker in Lubricants Sealants Adhesives


works great!



- LT37477
by:

Review from a similar Threadlocker in Lubricants Sealants Adhesives


Locks the threads so the screw doesn't back off. Its holding down a tongue pivot bolt and a anti-rattle bolt currently. Only time will tell if it stays put per long run. Put it was exactly as desired.



- LT37420
by:

Review from a similar Threadlocker in Lubricants Sealants Adhesives


Reinstalling clutch, equipment manufacturer specifies using LOCTITE 262 on clutch reinstall. Unable to locate 262 except in large quantities in my area. Etrailer had the small quantity 262 and responded to my order immediately. Completed clutch reinstall and equipment is running fine. Thanks Etrailer



- LT37420
by:

Review from a similar Threadlocker in Lubricants Sealants Adhesives


Product was exactly as advertised, and as I wanted. Delivered as stated. etrailer is a great company to work with. This is the second vehicle I have outfitted, and they have had great videos and directions with their products.



- LT1330799
by:

Review from a similar Threadlocker in Lubricants Sealants Adhesives


Loctite 243 (blue) worked great on my Harley Road King Custom primary asse3mbly. Great service and fast shipping. Would recommend etrailer to anyone. Will buy from in the future.



- LT37420
by:

Review from a similar Threadlocker in Lubricants Sealants Adhesives


Speedy arrival....



- LT37420
by:

Review from a similar Threadlocker in Lubricants Sealants Adhesives


Easy install and a HUGE difference in control. Along with the stabilizer you cannot go wrong.



- LT37420
by:

Review from a similar Threadlocker in Lubricants Sealants Adhesives


I am so glad I came across etrailer.com, They have what I need in stock, and show you how to use and or install the product. They have great prices and fast shipping, What else could you ask for!



- LT37420
by:

Review from a similar Threadlocker in Lubricants Sealants Adhesives


Needed Loctite 262 to assemble my Harley Road King primary. Great service and fast shipping. Will buy from etrailer in the future.


25
102
Show More Reviews

Ask the Experts about this Loctite Lubricants Sealants Adhesives

  • What is Fulton Lock # FSTL0603 Made Of and How To Prevent Theft of Fulton Tire Carrier # FSTC1000301
    Yes , the Fulton Spare Tire Lock, part # FSTL0603, is made of a hardened steel, which is very hard to cut or break. You can install the Fulton Hi-Mount Spare Tire Carrier, part # FSTC1000301, using a Loctite Threadlocker, part # LT37423. This is a liquid that will lock the nuts to the bolts and prevent anybody from removing them. To disassemble the nuts and bolts will require the use of heat. Making it time consuming for the thieves to take your item is the best deterrent against theft.
    view full answer...
  • Should Lock Washer be Used for Factory 12x2 Brake Assemblies
    Not necessarily. Some brake assemblies have Loctite like part # LT37423 on the bolts while other assemblies, like part # AKEBRK-7L-SA, require mounting hardware that includes lock nuts like what you would find in the kit # BRKH12S. If your brakes have Loctite on the mounting bolts then you don't really have to worry about the lock nuts on them.
    view full answer...




  • Why etrailer.com?

    At etrailer.com we guarantee:
  • Highest quality lubricants sealants adhesives for the best price.

    Our Lowest Price Pledge ensures you will never overpay for the parts you need.
  • Real product know-how.

    We make sure that the products we sell are what we say they are, and that they work the way they are supposed to work. Get real advice from a real person who has the knowledge and expertise needed to solve your problem.
  • Most detailed, accurate lubricants sealants adhesive information available.

    Because we take providing accurate product information seriously, we take our own detailed product photos, demo videos and installation videos, as well as verify measurements, instructions, and vehicle fit information.
  • Installations, made easy.

    We love helping people and have the most highly-trained customer service, hands-on experience, step by step videos and installation instructions.
  • Fast shipping.

    Your order is automatically routed to get out of our warehouse and to your door as quickly as possible. Receive free shipping on orders over $99.
  • Personalized service for life.

    We provide one-on-one, personalized service from the ordering process through the life of your product.
  • Trusted since 1946.

    We've been serving customers since our parts store first opened in 1946 and continue to be recognized by our customers, our vendors and third parties for exceptional service.
  • Returns Policy

    Need to return an item? No problem. Please read our Returns Policy for more information.

Info for this part was:

Employee Raymond P
Written by:
Raymond P
Employee Matthew S
Updated by:
Matthew S

At etrailer.com we provide the best information available about the products we sell. We take the quality of our information seriously so that you can get the right part the first time.