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  • Permatex 81668-6PK Stripped Thread Repair Kit (Pack of 6)
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Permatex 81668-6PK Stripped Thread Repair Kit (Pack of 6)

16 customer reviews

Currently unavailable.
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  • Makes reliable thread repairs to most metal-to-metal fasteners (coarse and fine)
  • Restores worn, stripped or damaged threads
  • Eliminates future corrosion, galling, seizing and rust
  • Effective up to 128 ft. lbs. of torque and between -65F to 300F
  • Suggested Applications: Intake manifold bracket fastener threads, timing chain cover bolt threads, valve cover bolt threads, water pump bolt threads
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Product Information

Technical Details
BrandPermatex
Item Weight1.4 pounds
Product Dimensions8.4 x 8.3 x 4.3 inches
Item model number81668-6PK
Manufacturer Part Number81668-6PK
  
Additional Information
ASINB001REZ7QU
Best Sellers Rank #3,035,532 in Automotive (See top 100)
Shipping Weight1.4 pounds
Domestic Shipping Item can be shipped within U.S.
International Shipping This item is not eligible for international shipping. Learn More
Date First AvailableFebruary 3, 2009
  
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Product Description

Permatex Stripped Thread Repair Kit makes reliable thread repairs without drills, taps, tools or inserts. Also restores worn, stripped or damages threads and eliminates future corrosion, galling seizing and rust. Repairs most metal-to-metal fasteners up to SAE grade 5 English and 8.8 metric (coarse and fine), and is effective up to 128 ft. lbs. of torque and between -65 degrees fahrenheit to 300 degrees fahrenheit.

Customer Questions & Answers

Customer Reviews

Most Helpful Customer Reviews

9 of 10 people found the following review helpful By James L. Hoffer on July 26, 2009
Size: Single Unit
i have used this three times trying to fix a M5 hole, on a carburator cover for my motorcycle. each time the screw strips it even with light torque.

i then tried three times with a points gap adjustment screw, and again it will not hold. don't buy
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8 of 10 people found the following review helpful By Mike K on May 27, 2011
Size: Single Unit Verified Purchase
Save your money.Followed directions to the T. Product had already gotten bad reviews. I thought maybe they didn't follow directions.It just doesn't work period....
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2 of 2 people found the following review helpful By Mulepick on April 6, 2014
Size: Single Unit
I have used this product a number of times and it works fine for me. I especially like avoiding the hassle of using helicoils and the potential of them coming out. I 've been surprised at the torque that this product will hold and the temp at which it works. I don't understand the other bad marks as I've used this product almost exclusively on motorcycle applications. I think perhaps the issue is that the surface must be clean and particuarly clean of oil. I use brake parts clean before this product.
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4 of 5 people found the following review helpful A Kid's Review on February 2, 2011
Size: Single Unit
I stripped some threads on a mountain bike bottle cage boss. Instead of drilling it out and rethreading it I tried to use this to fix it. While this worked out I really do not feel like it did exactly what I wanted it to do. The bottle cage has been secure and has not come loose in over 6 months of riding on rough trails, but I think I could have achieved the same result by gluing the screw into the boss.

Bottom line: it works, but it's probably not the best solution.
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1 of 1 people found the following review helpful By dj on December 3, 2013
Size: Single Unit
The product is terrible. It never hardened. I followed directions and when that didn't work I tried different proportions of the two, still didnt work. How can this product work for me if it never hardens? Don't waste your money like I did. Doesnt even deserve one star. BS.
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By Dave on June 10, 2014
Size: Single Unit Verified Purchase
This is how I responded to the seller. Do Not Buy this Item...

This item Was not only opened but had been returned to you, it does not work. yes the people that had bought it before me had tried it.
It did not work for them either. I will now put feedback for this product so I might help the next guy out. I hope Amazon no longer deals with you.
They took care of my Problem all I loose is the time I waited and spent applying. I am glad it will only take a rag to remove this junk...
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Size: Single Unit Verified Purchase
I used this on two stripped screw holes. One was a large M6 bolt and the other was a smaller M4. It worked pretty well on the M6 and not at all on the M4. I've read similar comments by others, so I wish they'd specify in the description that this product isn't intended for small, fine screw threads.
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Size: Single Unit
Hello
I've bought this with little to no hope that it would work. I should have go with heli-coil right away. no matter how I tried this thing crumbles in to pieces, the "release agent" does NOTHING. please save Your money.
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