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Permatex 24300 Surface Insensitive Threadlocker Blue, 0.34 oz.

4.5 out of 5 stars 98 customer reviews

Price: $9.99 & FREE Shipping on orders over $49. Details
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0.34 Ounce
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  • Medium to high strength threadlocker for general-purpose applications
  • Prevents loosening due to vibration
  • Removable with hand tools for easy disassembly
  • Especially well-suited for 6mm to 20mm (1/4" to 3/4") fasteners that have a slight oil film
  • Suggested Applications: Rocker studs, rocker adjustment bolts and bolts on valve and cam covers, oil pans, disc brake calipers, intakes, alternators, and pulley assemblies

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Frequently Bought Together

  • Permatex 24300 Surface Insensitive Threadlocker Blue, 0.34 oz.
  • +
  • Permatex 80078 Anti-Seize Lubricant with Brush Top Bottle, 8 oz.
Total price: $17.48
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Product Information

Size:0.34 Ounce

Technical Details

Brand Permatex
Item Weight 1 ounces
Product Dimensions 0.8 x 3.8 x 6.5 inches
Item model number 24300
Manufacturer Part Number 24300
OEM Part Number 24300

Technical Specification

Additional Information

ASIN B000HBM5TQ
Customer Reviews
4.5 out of 5 stars 98 customer reviews

4.5 out of 5 stars
Best Sellers Rank #6,393 in Automotive (See top 100)
#10 in Automotive > Oils & Fluids > Sealers > Thread Lock
#55 in Automotive > Oils & Fluids > Body Repair & Restoration Chemicals > Adhesives
Shipping Weight 0.8 ounces (View shipping rates and policies)
Domestic Shipping This item is also available for shipping to select countries outside the U.S.
International Shipping This item can be shipped to select countries outside of the U.S. Learn More
Date First Available July 1, 2006

Warranty & Support

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

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Product Description

Size: 0.34 Ounce

Permatex Surface Insensitive Threadlocker Blue is a medium/high strength threadlocker for general-purpose applications. Especially well-suited for 6mm to 20mm fasteners that have a slight oil film, this threadlocker prevents loosening due to vibration. Oil resistant and removable with hand tools for easy disassembly. Applied as a liquid or gel, threadlockers are superior to conventional lock washers, nylon inserts, and other mechanical devices because they secure the entire fastener assembly against loosening from shock and vibration by filling the space between threaded metal parts, curing to form a tough, adhesive bond and seal. They also seal the threads against leakage, preventing rust and corrosion.

Customer Questions & Answers

Customer Reviews

Top Customer Reviews

Size: 0.34 Ounce Verified Purchase
EDIT (March 2010): It's still holding tight after 1.5 years!
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Brief summary: It's been working great for over 3 months on my bike.

Longer version:
The left crankarm on my 20+ year old bicycle was coming loose every month or so. The local bike shop said that there was nothing I could do short of tightening it and that the problem would get worse until I replaced the crankarm (a >$100 fix and lots of fun trying to locate an overpriced unused vintage part on auction sites).

I researched the problem online and came across a few mentions of people using Loctite threadlocker to fix the problem. I decided to get the Loctite 243 since it is resistant to grease. Unfortunately, the local shops only carried Loctite 242 (not oil resistant). Amazon carries Loctite 243, but it is through a third party vendor which charges as much as the item costs for shipping. Fortunately, I came across this Permatex threadlocker, which is also grease resistant (#24300) and is offered with free shipping. My impression is that this is the same exact product as the Loctite 243, but rebranded.

Over 3 months ago, I removed my crankarm and wiped the gunk off both the male and female threads. I applied Permatex to the male threads and screwed the crankarm back in. I let it sit undisturbed for 2 days to allow the stuff to fully cure. I have been riding my bike almost everyday since then (about 1000 total miles), but the crankarm has not come loose.

I'm so impressed by this product that I decided to use it on other screws that would periodically come loose (like on my rear rack). Everything has stayed in place.

If you're unfamiliar with these thread locking compounds, be aware that there are several versions of the Permatex and Loctite.
Read more ›
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Size: 0.34 Ounce Verified Purchase
I used Permatex Threadlocker Blue and found it much easier to control, more viscous, than Loctite's product. It is more resistant to 'running' off of whatever substrate you apply it. I've used it on tiny screws to larger bolts. It works flawlessly. The higher viscosity makes it like working with a gel. I will buy more of this product. Also, the bottle makes applying the product much easier when compared with the small tubes. Excellent threadlocker that works and can be undone with a left turn of the screw head or bolt. Permatex Threadlocker Blue is an exceptional product.
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Size: 0.34 Ounce Verified Purchase
This is my favorite brand of "blue" loctite. It's not as runny as others and does a good job of increasing the pressure required to remove a screw. Some brands I find will "snap" and then it's like it wasn't there when you take the screw out. This stuff gives a fight the whole way out...but in an appropriate "blue loctite" way, not like the evil red.
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Size: 0.34 Ounce Verified Purchase
I use this all the time. NIce to find the "surface insensitive" type, I didn't know it existed. With this type I don't need to degrease everything - just wipe it off and put a drop of thread-lock on it. Good to go.
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Size: 0.34 Ounce Verified Purchase
Have a loose screw?

A small amount of threadlocker on the threads will act like glue around them holding the screw in place. It lasts too. You can break it open by turning the screw with a screwdriver.

Great stuff!!
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Size: 0.34 Ounce Verified Purchase
Product worked it's intended purpose excellent. I just completed riding solo the Baja 500 on a motorcycle and didn't loose any bolts. Worked great

There should be no minimum of words required for commenting. I am not going to rate anymore if I have to write a story on each product
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Size: 0.34 Ounce Verified Purchase
Perfect for items that have to be taken apart for maintenance from time to time. It beats LOCTITE by a mile. And I'm a retired master mechanic. It even works in the presence of oil residue. An out standing product by Permatex Thread Locker.
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Size: 0.34 Ounce Verified Purchase
They say not to use this for snowboarding but I feel with me trying new tricks I am always falling. Sometimes causing my bindings to move out of place forcing me to unstrap, get out my tool, and readjust them to their correct position. This saves me from all of that and I can still undo my bindings at the end of the day with no problem.
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