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Loctite Threadlocker 262 - High Strength - Up to 3/4" Nuts/Bolts - 0.20-Fl-Oz Tube

Loctite Threadlocker 262 - High Strength - Up to 3/4" Nuts/Bolts - 0.20-Fl-Oz Tube

Item # LT37420
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This high-strength red threadlocker locks and seals a variety of threaded assemblies, preventing unwanted loosening of nuts and bolts and thwarting corrosion of treated parts. Stands up to the worst shock, vibration and environmental conditions. Fastest Shipping and Guaranteed Lowest Prices for Loctite Threadlocker 262 - High Strength - Up to 3/4" Nuts/Bolts - 0.20-Fl-Oz Tube. Read our customer reviews of Loctite lubricants sealants adhesives. Call 1-800-940-8924 for expert service or order your lubricants sealants adhesives part number LT37420 by Loctite online at
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  • Reviews (100)
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Loctite Lubricants Sealants Adhesives - LT37420

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

This high-strength red threadlocker locks and seals a variety of threaded assemblies, preventing unwanted loosening of nuts and bolts and thwarting corrosion of treated parts. Stands up to the worst shock, vibration and environmental conditions.


  • High-strength thread-locking liquid keeps nuts and bolts securely tightened
    • Super-strong formula keeps connections tight even during the worst conditions of stress and vibration
  • Treated threads resist corrosion
  • Assembled parts require heat to be separated with hand tools
  • Made in the USA


  • Application: up to 3/4" (20 mm) diameter nuts and bolts
  • Quantity: 0.20 fl oz (6 mL)
  • Fixture cure (time required to become tacky): 5 minutes
  • Full cure (time required to reach full set): 24 hours
  • Temperature range (endurance limits of threadlocker): -65 F to 300 F


  • Cylinder block bolts
  • Ring gear bolts
  • Transmission shaft bolts
  • Recommended for some trailer hitch installations

The shaded areas of these diagrams indicate where this threadlocker should be applied in various types of threaded assemblies.

Diagram of threadlocker placement
Diagram of threadlocker placement

Threadlocker 262 is applied as a liquid to the threads of screws, nuts and bolts before assembly. The red, high-strength formula keeps connections securely tightened, even during the most severe vibration, shock and stress. Threadlocker also seals out air, water and grime to prevent rust or other corrosion from forming, ensuring that the connected assemblies will remain sound for a long time. Uncorroded assemblies come apart easier and can be reused.

This threadlocker requires heat (500F) to free parts for disassembly with hand tools. Five minutes' application of a torch may be required. Disassemble while parts are still hot.

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, zinc, galvanized steel, magnetite steel, pure aluminum, titanium, magnesium, gold, silver, plastic, cadmium, Iconel, natural or chemical black oxide and anodized aluminum.

Klean 'N Prime can speed the cure rate of Threadlocker 262. This is especially helpful when you are applying the adhesive to any material, active or inactive, in colder temperatures (below 70 F).

Lock Tight OEM symbol

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

487231 Lock Tight Thread Locker 262 - High Strength - Red

Alternate part number: 37420

California residents: click here

Customer Reviews

Loctite Threadlocker 262 - High Strength - Up to 3/4" Nuts/Bolts - 0.20-Fl-Oz Tube - LT37420

Average Customer Rating:  4.9 out of 5 stars   (100 Customer Reviews)

This high-strength red threadlocker locks and seals a variety of threaded assemblies, preventing unwanted loosening of nuts and bolts and thwarting corrosion of treated parts. Stands up to the worst shock, vibration and environmental conditions.


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


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


Stuff works great.


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

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


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.


Juste received order


works great!


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.


Speedy arrival....


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.


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


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


I am so glad I came across, 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!


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


Product worked as advertised. Can't ask for more than that. was very good at expediting my order. Thanks


Excellent product used it several times on some small nuts and bolts.


Loctite used on base plate installation. Worked well as always.


The parts were as described during the purchase phase of my order. The prices and quality of parts were very good and de]livery and packaging efficient. I will refer this supplier to my friends!


Good product to prevent nuts from loose ning.


great products and the best customer service anywhere..


Perfect installation. works as advertis ed..


Great product. Instructions easy to follow


It works. A must use item !


Perfect size for replacing 24 wheel studs on my 1975 Argosy.


I ordered multiple Roadmaster products from 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.

Show More Reviews

Ask the Experts about this Loctite Lubricants Sealants Adhesives

  • Is there a Way to Lock D-Ring Shackles to Front Of Jeep Wrangler Bumper
    Most Jeep guys leave the D-rings inside the Jeep or torque down the pins so tight that it would take a very determined thief to get them. You can also try a thread locker like the part # LT37420 to make them even harder to remove.
    view full answer...
  • Securing Axle U-Bolts With Loctite
    Though it is not completely necessary to use something like Loctite's Threadlocker # LT37420, there wouldn't be any adverse affects either. Most U-Bolt kits do come with lock nuts making them more secure than standard nuts, but you can definitely apply # LT37420 to completely secure their purchase on the U-Bolts.
    view full answer...
  • Anti-seize Product Recommendation to Install a Trailer Hitch on a 2007 Honda Fit Sport
    For Draw-Tite trailer hitch # 24776 for your 2007 Honda Fit Sport there isn't a specific recommendation for anti-seize products for the installation hardware. Loctite # LT37616 would work fine. But if you are talking about thread locker then there is just one thing to consider: how difficult do you want it to be to remove the hardware? If you use blue Loctite # LT37643 then the hardware can still be removed using hand tools. But if you use red Loctite # LT37420 then power tools would have...
    view full answer...
  • What Color or Strength Loctite Do I Need to Install Wheel Studs?
    Yes, you will want to use the Loctite Threadlocker 242 - Medium Strength - 1/4" to 3/4" Nuts/Bolts item # LT37418 to install the Redline Replacement wheel studs item # 25-53. This is the blue one you will be able to remove your studs in the future if you need to replace them. The red Loctite Threadlocker 262 - High Strength - Up to 3/4" Nuts/Bolts - 0.20-Fl-Oz Tube item # LT37420 is the one you would either want to use or stay away from if you don't plan on removing the bolt.
    view full answer...
  • Roadmaster EZ2 Base Plate Installation on a 2013 Ford C-Max
    The Roadmaster EZ2 Base Plate Kit, # 524432-1, bolts to the bumper core and subframe of your 2013 Ford C-Max. I have attached a link to the installation instructions for you to check out. The instructions include photos of the installation steps. Roadmaster also requires red loctite, # LT37420, to be used on all bolts. There may be some fascia trimming required on your C-Max. The receivers for the draw bars will require an opening on both sides of the lower front grille. Check out the...
    view full answer...
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  • Should Loctite Be Used to Install a Curt Hitch on a 2014 Honda Odyssey
    There's no reason you couldn't use Loctite like part # LT37420 when installing the Curt hitch part # C13068 but as long as you torque the install hardware down to the proper torque figures in the instructions you wouldn't have any problems with the bolts loosening. I attached an install video for this hitch for you to check out as well.
    view full answer...
  • Troubleshooting Turret Bolts of Sidewinder Coming Loose
    When you tightened the 4 turret bolts did you use the included lock washers? Lock washers should prevent the bolts from backing out and if you didn't use them they would back out much easier. You can try thread locker like Loc Tite # LT37420.
    view full answer...
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  • Securing Steel Coupler To Aluminum Car Hauler Trailer Tongue To Prevent Theft
    Thanks for the photo of your trailer coupler. That really helps explain what you are asking about. I spoke with a couple of other Experts and we may have a couple options you can consider. One way to go is to use Loctite Threadlocker 262, part # LT37420 on the coupler bolt threads. This is put on the threads when bolting the coupler to the trailer tongue and becomes impossible to remove with hand tools without heating it up to 500F degrees to free the parts for disassembling. That would...
    view full answer...
  • Is Threadlocker Required To Install A Trailer Hitch Receiver?
    To install the Curt Trailer Hitch Receiver - Custom Fit - Class III - 2" # C13119 or any hitch, there is not a requirement in the instructions to use any threadlocker, but I personally think it is wise. The instructions say to periodically check to ensure fasteners are tight, but I don't believe most people actually do that and Loctite Threadlocker 262 - High Strength - Up to 3/4" Nuts/Bolts - 0.20-Fl-Oz Tube # LT37420 would be a good idea.
    view full answer...
  • What is the Torque Rating for the Turret Bolts on My 2007 5th Airborne Sidewinder?
    I was able to track down a copy of the instructions for your 2007 5th Airborne Sidewinder with the 3 turret bolts.The 3 bolts need to be torqued at 80 ft./lb. per the instructions. Keep in mind that you are not torquing the bolts as one would when clamping something together,but torquing to retain the 2 pieces. My contact at Reese explained that the lock washers and bolts may need to be replaced over time and they recommend checking the torque after each use. He said that Reese also recommends...
    view full answer...
    Image 1 for
  • Base Plates That fit a Two-Door 1998 Chevy Tracker
    The correct base plates for your two-door 1998 Chevrolet Tracker are the Roadmaster XL Base Plate Kit - Removable Arms # 118-15. We do not have a video showing an installation of these plates, but the kit comes with everything you'll need except for Loctite Red # LT37420, which you'll use on all bolts when mounting the bracket. I've added a link to the instructions for you to take a look at; it's not a video, but it should provide you with a good idea of what the installation process...
    view full answer...
  • Troubleshooting Wear On Folding Hitch And Recommendations For Hardware
    If your bolts are getting loose, I recommend using Loctite Threadlocker 262 - High Strength - Up to 3/4" Nuts/Bolts - 0.20-Fl-Oz Tube # LT37420 and torquing your bolts to the manufacturer specs. The Loctite will keep the bolts from coming loose and prevent further wear because of loose hardware. If you need to replace the unit you currently have due to the oblong holes, I recommend the Fulton Fold-Away Coupler Hinge Kit for 3" x 3" Tongue - Bolt On - Up to 5,000 lbs # FHDPB330301. Unfortunately...
    view full answer...
  • Tightening Nutset In Tailgate Of 2016 Chevrolet Silverado
    I called my contact at DeeZee and asked about the installation of the Tailgate Assist, part # DZ43102. They told me that you can remove the screw and then put some Loctite like part # LT37420 on the threads of the screw and snug the screw back down. Let it sit a couple hours and it should secure the nutset for you.
    view full answer...
  • Is Thread Locker Necessary on Bolts When Installing a Trailer Hitch
    The Curt Class III trailer hitch for your Pathfinder, part # C13126 would utilize nuts that are welded up into the frame member. The conical toothed washers used in the installation do a good job of maintaining the torque applied to the bolt during installation, so threadlocker like # LT37420 isn't necessary although using it won't cause any harm. If you decide to use threadlocker, and you decide at some point in the future to remove the hitch you'll want to remember to apply heat to...
    view full answer...
  • Butyl Tape To Seal Trailer Roof Panel Joint
    The LaSalle Bristol XTRM Butyl Tape part # 344270341411-1 can definitely be used to seal the joint on the roof your cargo trailer. Butyl tape is used to seal off many roof accessories like trailer vents and fans. Since the butyl tape is pre-formed it is easier to install and get a water tight precise seal compared to some of the liquid sealants that can be more difficult to maneuver. The adhesive on the tape forms a bond with the surface that improves over time. This particular butyl tape...
    view full answer...
    Image 1 for
  • Replacing Foot Pad On Lippert 6-Point Level-Up System - 132 Ft-lb Torque Requirement + Loctite
    I understand your concern. I called Lippert to verify that the 132 Ft-lb of torque and use of Locktite is still valid. They said that was the requirement and there were no alternative instructions. The assumption is that this is the method they used for installation and that by removing the foot pad you will run the risk of damaging the cylinder. I also verifed the order that bolts, washers, and o-rings are installed. It is bolt, then washer, then o-ring, then through the foot pad, add...
    view full answer...
    Image 1 for
  • Diagnosing Reese 5th Wheel Rail Adapter For Ram OEM Prep Package That Is Rattling When Driving
    A small amount of rattle or play is normal for adapters like the Reese 5th Wheel Rail Adapter for Ram OEM 5th Wheel Towing Prep Package # RP30154. But you may need to tighten your adjustable anchor points as shown in the demonstration video that I attached (about the 5 minute mark). You may want to use some sort of sealant such as Loctite Threadlocker 262 - High Strength - Up to 3/4" Nuts/Bolts - 0.20-Fl-Oz Tube # LT37420 to keep the anchors where you want them.
    view full answer...
  • Installing A Replacement Foot Pad For Lippert Hydraulic Ground Control Level System
    The replacement Foot Pad for Lippert Hydraulic Ground Control Leveling System - Qty 1 # LC324269 needs to be torqued to 132 ft-lb and Lippert recommends using some Loctite Threadlocker 262 - High Strength - Up to 3/4" Nuts/Bolts - 0.20-Fl-Oz Tube Item # LT37420 to prevent the bolt from loosening. You are correct with the placement of the washer and o-rings.
    view full answer...
  • Is Thread Locker Recommended Installation Hardware of etrailer Brand e98906 Trailer Hitch
    If the # e98906 hitch installation hardware is torqued according to the instructions, it won't be necessary to use # LT37420 thread locker. You can certainly do so if you wish, however please note that the torque specs mentioned in the installation instructions are for dry torque. If thread locker is used you'd use different torque specs (wet torque) which can be looked up online dependent on the size and class of the fastener.
    view full answer...
  • Brake Assembly Stud Rotates when Trying to Tighten the Nut
    You might be able to drive out the one stud that is rotating, coat it with red Loctite such as # LT37420, let it cure, and then give it another try. Or you could tack weld it to the brake assembly to prevent it from turning. The threads must be a different pitch or size since the old ones are not fitting the new shocks. What I would do is take one of the new shocks or mounts or bolts with you to a hardware store and try out some nuts to find one that fits (unless Dexter can provide the...
    view full answer...
  • Can You Use Loctite On The Andersen 5th Wheel Hitch Set Screws
    I spoke with Andersen and their tech stated that you can use some Loctite # LT37420 to help prevent the set screws on your Andersen Hitch # AM3200 from needing to be retorqued as often. He also stated you may need to replace the coupler, which you can get directly from them.
    view full answer...
  • Securing CE Smith I-Beam Clamps for Boat Trailers That keep Falling Off
    The CE Smith I-Beam Clamps for Boat Trailers, part # CE27682A are designed for trailer that have an I-Beam 2-1/2 to 4-1/2 inches wide. It seems odd that one side stays on and the other side keeps falling off on your trailer. I do not recommend using an impact wrench to tighten the clamps as that could cause damage to the clamps or the boat frame. You might try using a spacer on the bolt in between the lower part of the clamps. I have attached a photo of the # CE27682A. Adding a spacer...
    view full answer...
    Image 1 for
  • Is there a Draw-Tite Gooseneck Trailer Hitch for a 2006 Dodge Ram 2500 Diesel Mega Cab
    I spoke with my contact at Draw-Tite and she stated that Gooseneck Trailer Hitch, # 9464-35, will fit the diesel models of the 2006 Dodge Ram 2500 Mega Cab with a 6 foot bed. You may also need some Loctite Threadlocker, # LT37420, for installation if you do not already have some.
    view full answer...
  • Will B&W Underbed Gooseneck Hitch # BWGNRK1000 Fit a 1996 Chevrolet 1500 With 8 Foot Bed
    The B&W Underbed Gooseneck Hitch, part # BWGNRK1000, will fit your 1996 Chevrolet C/K 1500 Truck with 8 foot bed. This hitch has a 30,000-lb gross towing weight capacity and a 7,500-lb tongue weight capacity. It is also recommended to use Loctite Threadlocker 262, part # LT37420, on all of the bolts when installing the B&W gooseneck hitch.
    view full answer...

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