Thread Repair Kit 1/4-20in.
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Heli-Coil Thread Repair Kit 1/4-20in.

Part No. HEL5521-4 Warranty Details  
Quantity  Add to Cart
All kits contain a Heli-Coil tap, installation tool, a quantity of insert and detailed instructions.
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by PowerReviews
Heli-CoilThread Repair Kit 1/4-20in.

(based on 2 reviews)

Ratings Distribution

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  • 1 Stars



Reviewed by 2 customers

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I had success, but they could've made it easier...


from Racine, WI

About Me Auto Enthusiast, Mechanical Pro

Verified Reviewer


  • Functional
  • Low Cost


  • Not Complete

Best Uses

  • Diy
  • Home
  • Minor Repairs

Comments about Heli-Coil Thread Repair Kit 1/4-20in.:

-I used it in a mfr'g shop in a bar of aluminum- it worked well.
-I liked that it was FAIRLY complete i.e. had quite a few inserts, the special tap and the drive tool.
-I didn't like the fact that it didn't come with a drill bit, which would've made it a complete kit.
-It was a cheaper solution than buying it from a local industrial supply house.
-NOTE! I saw a comment about a broken tap. It is imperative that you drill and tap perpendicular to the workpiece! I had a hand-held drill guide and tap guide, which can be made from any piece of discarded steel. Otherwise you run the risk of a broken drill or tap.

(6 of 13 customers found this review helpful)


The kit is good,BUT.


from Bardstown, Ky.

About Me Mechanic

Comments about Heli-Coil Thread Repair Kit 1/4-20in.:

The kit almost gives you everything you need, but, with out the proper size drill bit in the kit, you either have one at home or you have to buy one. Seems to me that I remember the drill coming with the kit at one time. I guess its just another company trying to fool us by cutting the contents and not raising the price. Im not fooled.

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