ESKONKE

ESKONKE Thread Locker Blue 243 - Removable Threadlocker Metal Glue for Nuts Bolts Fasteners Medium Strength Screw Compound

654+ bought in the past month

$9.99

About this item

  • Fastening Screws Thread Locker: Ensure long-lasting fastening of bolts and nuts, preventing loosening caused by vibration or shock—even in extreme conditions like high vibration, humidity, or ultra-high/low temperatures. A must-have solution for extending the service life and ensuring the safe use of metal fasteners!
  • Prevents Rusting / Corrosion / Leakage: With its unique anaerobic solidification function, this flowing liquid ensures tight contact and perfect sealing of bolts and nuts. Eliminate the need for additional washers or traditional locking screws, saving you time and cost.
  • Widely Used: Ideal for Tightening and Maintaining all Metal Screws Below M32, Suitable for a variety of applications, including automobiles, motorcycles, bicycles, furniture, household appliances, electronic devices, and industrial equipment. Just one bottle of thread locker ensures the normal and safe operation of your equipment.
  • Simple Operation: Just apply a small amount to the bolt and nut fixing position, And then it will Start to Cure in 10 Minutes, And your items can be used normally after 24 hours of fully cured. The peak nozzle design with pull-up opening and downward pressure sealing can easily maintain the long-term effectiveness of the glue and enable precise and controllable application.
  • Wise Choice: Same formula, Same using experience. American brand, Chinese OEM. Please believe in the power of ESKONKE brand — We are committed to delivering top-quality products and an exceptional customer experience.
$9.99

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Product details

BrandESKONKE
Specific Uses For ProductEtend the Life of Items and Safe Using, Lock Tight Fasteners, Prevent the Bolts from Rusting, Seal Screws, Thread Locker 243 See more
MaterialEpoxy Acrylate(60-65%) / Oleic acid, ethoxylated(25-30%)
Item FormLiquid
Special FeatureAdhesive viscosity has thixotropy, Anti corrosion, Chemical resistance, High temperature resistance, Oil resistant See more

Technical specifications

brandESKONKE
specific_uses_for_productEtend the Life of Items and Safe Using, Lock Tight Fasteners, Prevent the Bolts from Rusting, Seal Screws, Thread Locker 243
materialEpoxy Acrylate(60-65%) / Oleic acid, ethoxylated(25-30%)
item_formLiquid
special_featureAdhesive viscosity has thixotropy, Anti corrosion, Chemical resistance, High temperature resistance, Oil resistant
colorBlue
item_package_quantity1
package_informationBottle
item_volume1.69 Fluid Ounces
viscosity1300 ~ 3000 Centipoise
full_cure_time24 Hours
water_resistance_levelWater Resistant
tensile_strength180 Pounds Per Square Inch
unit_count1.69 Fluid Ounces
upc788462035616
number_of_pieces1
manufacturerESKONKE
package_dimensions6.1 x 3.66 x 1.1 inches
item_weight2.08 ounces
item_model_number243
date_first_availableSeptember 8, 2023
best_sellers_rank#842 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #1 in Retaining Compounds

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Customer reviews

4.62,164 ratings

Customers say

Customers find the thread locker works well, with one mentioning its success in bedding an AR barrel.

★★★★★

Does what you need on smaller threads.

K. J. KeoughJanuary 5, 2026✓ Verified purchase

The first thing to understand is that this is non-permanent and designed to prevent breaking smaller threaded parts when removing without heat or impact. It can be messy if you use too much, but that’s on you! The bottle is a good design. Store it upright to prevent leaks. Shake well! Read more

★★★★★

Maybe not for Space-X use, but works for me fine.

GRHFebruary 6, 2026✓ Verified purchase

I always have a bottle of 243 and 680 on hand and use them all the time on all sorts of stuff that needs attention. Yes, the bottle is supposed to be "half full" , the air space is to prevent it from hardening in the bottle. It is sold by weight, not volume and hardens in the absence of oxygen. The application nozzle is opened by pulling up on the white ring at the base, and useful for preventing accidental spills. Not much fun finding the tipped over bottle somewhere with half the liquid hardened underneath it IFYKYK.... Slightly more viscous than the name brand which I think is nice, so I get a better chance of installing the fastener in difficult locations without it dripping off. Works the same, looks the same, smells the same, and hardens the same, at a fraction of the cost. Read more

★★★★★

Keeps my leg adjustments tight

J. HuberJanuary 31, 2026✓ Verified purchase

Great thread lock! Use it on my Prosthetic Leg after adjustments. A gotta have item! Read more

★★★★★

Good product

william h rotroffJanuary 18, 2026✓ Verified purchase

Good price and nice product Read more

★★★★☆

Seems To Work

DCDecember 18, 2024✓ Verified purchase

This thread locker seems to work, however I found it a little tricky and did not see any info on how to actually open the bottle ... first there's the main cap, ok just pop that off it is tight at first but simple enough right? well yes and no, as with most you have to pierce the nozzle to get the liquid to flow so I did that and it still was not dispensing any liquid. NOTE: Just in case others are unsure and have the same issue I did then the following info is for you. Then I noticed there's a spot that sticks out lower on the nozzle this is a secondary seal that you must pull up on to unlock it (See Pic), while this is great it would be nice if the info to open the bottle was included in the package. So unless I somehow missed it I did not see any ... Anyway with all that sorted the product works as it should and seems to hold tight and sets quickly, but because of the lack of proper instructions I am docking a star. O and yes as others have mentioned the bottle is half full. I checked the weight of the product and it is around 50g minus the weight of the bottle, so you are getting what they say your getting, its just in a large one size fits all bottle that they must use for all there products which in my opin is just ridiculous and one of the reasons for many bad reviews, they should really just use a smaller bottle for a smaller amount, but because you only use a drop or 2 at a time this amount is still quite a lot, and should still last a very long time. Yes I can recommend this product, as it does seem like a decent value, just know it will come in an oversize bottle, but they are not shorting you on the actual product. Read more

Review image 1
★★★★★

Useful for securing screws and yet soft enough to rework later.

LarryDecember 8, 2025✓ Verified purchase

My application is for my RC hobby, both builds and maintenance. I’ve only used it on a few parts so far, but so far it is working exactly as I hoped, a quick and secure connection that can also be reworked without stripping anything out. There’s plenty in the bottle, half is air which keeps it liquid. Once you get it into a threaded connection is begins to harden. Tip is a bit large for hitting tight spots but I use a sharp thin metal tip to guide small drops into tight locations. If you leave some on a surface it’s easy to wipe off. Read more

★★★★★

Just saying!

Harold S.January 11, 2026✓ Verified purchase

Did a great job on a metal frame for a Queen size bed.... Have had it ( the frame), for a while. Not going to bad mouth any other brands. Bought this to see if it could help even with the wear and tear of the past. Had previously used a popular brand but for what ever reason it failed immediately, (in a week or so.. Had waited to give it time to set and cure) . The Eskonse thread blocker Blue 234 actually has held and I even gave it the week to cure just like the one I havd been using previously. This thread locker worked after the same curing time, on the same frame and is still working 2 weeks later. Read more

★★★★★

Let's get stuck

S. CarlsonFebruary 18, 2026✓ Verified purchase

If you’ve ever used Threadlocker, you know it’s basically the unsung hero of the toolbox—the quiet professional that keeps everything exactly where it should be. In fact, its grip is so dependable that it almost reminds me of a pair of handcuffs… minus the drama, of course. Where handcuffs are designed to keep things from going anywhere under pressure, Threadlocker does the same for bolts and screws, but with far more finesse. No clicking metal, no keys to misplace—just a clean, confident hold that doesn’t let vibration or time loosen its resolve. What I love most is how it manages to be both strong and subtle. You apply a drop, tighten things up, and suddenly your hardware is locked in like it signed a long‑term contract. It’s the kind of reliability that makes you forget about the fastener entirely, which is exactly what you want. If you’re looking for a product that keeps things secure without any fuss, Threadlocker is the calm, capable counterpart to the more dramatic tools of restraint. It’s dependable, tidy, and always gets the job done. Read more

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