Thread Repair Kits by E-Z LOK™
Each E-Z LOK thread repair kit comes with durable, high quality threaded inserts specially designed to fix damaged threads. Thread repair insert kits are available in a variety of internal thread sizes, in both standard and metric measurements. Coarse and fine thread repair options are also available..
Our thread repair kits also include all the tools you will need to install your thread repair inserts. These kits are designed for use in aluminum, cast iron, steel, wood, automotive, and spark plug applications.

E-Z LOK™ (Solid Wall) - Assortment Kits
These thread repair kits contain inserts in a range of sizes, providing maintenance teams and other frequent users with an easy-to-store solution for thread repair. Manufactured from carbon steel and 303 stainless steel. Designed for use in metal. 17 “Assortment” thread insert kit options available.
E-Z LOK™ (Solid Wall) - Installation Kits
These thread repair kits include 20 single-size Thin Wall inserts, plus a drill, tap, and installation tool. These kits provide everything required to repair damaged threads. Carbon steel construction. Designed for use in metal. 18 “Installation” thread insert kit options available.
E-Z Coil™ Economy Thread Repair Kits
Available In:
- Inch kits from #2 to 1-1/2
- Metric kits from M3 to M39
- Spark plug kits from M10 to M18
Kit includes:
- Threaded Inserts
- STI tap
- Installation Tool

E-Z Coil™ Standard Thread Repair Kits
Available In:
- Inch kits from #2 to 1-1/2
- Metric kits from M3 to M39
- Spark plug kits from M10 to M18
Kit includes:
- Threaded Inserts
- Drill
- STI Tap
- Installation and Tang Break Tool

E-Z Knife™ Brass - Standard Thread Repair Kits
Available In:
- Range of I.D. Thread Sizes
- Inch or Metric Threads
Kit includes:
- 10 single-size inserts
- Matching size drill bit
- Special Drive Tool

E-Z Knife™ Stainless Steel - Standard Thread Repair Kits
Available In:
- Range of I.D. Thread Sizes
- Inch or Metric Threads
Kit includes:
- 10 single-size inserts
- Matching size drill bit
- Special Drive Tool

E-Z Knife™ - Assortment Kits
Available In:
- Range of I.D. Thread Sizes
- Inch or Metric Threads
Kit includes:
- Assortment of Sizes

E-Z Hex™ - Standard Kits
Available In:
- Range of I.D. Thread Sizes
- Inch or Metric Threads
Kit includes:
- 10 single-size inserts
- Matching size drill bit
- Special Drive Tool

E-Z Hex™ - Assortment Kits
Available In:
- Range of I.D. Thread Sizes
- Inch or Metric Threads
Kit includes:
- Several sizes of inserts