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HeliCoil Thread Repair Kits

HeliCoil Professional Kits include everything you need to do the job right – 3 lengths of inserts 
(1D, 1.5D, 2D) for multiple applications, HSS drill, HeliCoil tap, HeliCoil installation tool, HeliCoil 
tang removal tool – all in a rugged tool box.

HeliCoil Professional Kits are available in metric sizes from M2 to M12 and in UNC/UNF 
sizes from UNC 4-40 to 1/2”.

HeliCoil Master Thread Repair Kits contain HeliCoil inserts of medium length (1.5D), HSS drill, 
HeliCoil tap, and HeliCoil installation tool. 

HeliCoil Master Thread Repair Kits are available in metric sizes from M14 to M20 and in 
UNC/UNF sizes from 9/16” to 1-1/2”. 

The professional’s choice! HeliCoil Master Thread Repair Sets contain tools for the most 
commonly used thread sizes. Sizes in Metric Coarse, Metric Fine, Inch Coarse, and Inch Fine are 
available. 

The sizes for each thread type are:

•Metric M5, M6, M8, M10x1.5
•Metric M5, M6, M8, M10x1.25
•Inch Coarse (UNC) 1/4, 5/16, 3/8, 7/16, 1/2 and 5/8
•Inch Fine (UNF) 10-32, 1/4, 5/16, 3/8, 7/16 and 1/2. 


Each HeliCoil Master Thread Repair Set contains a drill, HeliCoil tap, HeliCoil installation tool, a 
quantity of HeliCoil inserts for each size and complete installation instructions.

HeliCoil Spark Plug Kits offer the highest quality and most durable form of thread repair 
available. They are the first choice of professional mechanics and engine rebuilders.


HeliCoil Spark Plug Kits are available in sizes M10, M12, M14, M18, and 7/8". Each kit 
contains a HeliCoil piloted reamer tap (no drilling necessary), a HeliCoil installation tool, and a 
quantity of HeliCoil inserts. The M12 and M14 kits contain several insert lengths to 
accommodate all spark plug reaches. 

HeliCoil Spark Plug Inserts & Kits are the preferred method of repair, specified by virtually all 
U.S. and foreign vehicle manufacturers.

HeliCoil Sav-A-Thread Thread Repair Kits are the easiest way to permanently repair stripped 
spark plug hole threads, and is the only thread repair product that can be used to repair both 
taperseat and gasket type spark plug assemblies. 
The HeliCoil Sav-A-Thread Insert is serrated at the top. When this portion of the insert is
expanded, it embeds itself into the spark plug port and will never come out!

HeliCoil Sav-A-Thread Repair Kit Contents:

•a HeliCoil Piloted Reamer Tap. With the tap, no drilling is necessary perfect alignment of the 
   tapped hole can be achieved
•Three HeliCoil insert lengths, short, medium, and long, are available to accommodate all 
   spark plug reaches
•An Expanding Tool


Virtually all engines built today have aluminum cylinder heads. This, combined with the growing 
number of DIY users, and the need for quick, easy, on-the-spot repairs, make HeliCoil 
Sav-A-Thread repair kits a must for every store and shop.

HeliCoil Thread Repair Kits for Automotive Users

The Emhart Technologies range of HeliCoil thread repair kits are used for repairing tapped holes which have been stripped or damaged 
due to wear, corrosion and overtorque, as well as for strengthening internal screw threads in metals, plastics, and other materials.
 
HeliCoil Thread Repair Kits are available in metric, inches, and spark plug series and each thread repair kit come with a quantity of HeliCoil 
screw thread inserts, the appropriate size drill, high speed steel HeliCoil tap, HeliCoil installation tool, and a HeliCoil tang removal tool. 

Emhart Technologies HeliCoil Thread Repair Kits are available in:

•Metric Coarse Kits : sizes M3 to M20
•Metric Fine Kits : sizes M8 to M20.
•Inch Coarse Kits (UNC) : sizes 8-32 to 1-1/2" 
•Inch Fine Kits (UNF) : sizes 10-32 to 1-1/2"

HeliCoil Aftermarket Thread Repair Kits are a low cost, handy economy kit suited to general use.
HeliCoil Aftermarket Thread Repair Kits are available in Metric, UNC, & UNF sizes and they come
with a HeliCoil STI Tap, HeliCoil Installation Tool, & a quantity of HeliCoil screw thread inserts.