5549-16 HELICOIL Heli Coil Master Thread Repair Kit

Review HELICOIL Heli-coil Master Thread Repair Kit Size Inch 20 Used

The Helicoil 5549-16 Heli-Coil Master Thread Repair Kit 20 is a comprehensive solution for repairing damaged or worn-out threads in various applications. This kit comes with an assortment of 20 Helicoil inserts, specifically designed for repairing threads with a size of 5/16-20 UNC (Unified National Coarse) tapered hole.

Each Helicoil insert is made of high-strength alloy steel, ensuring durability and longevity. The unique helical design of the inserts allows for effective thread repair, even in severely damaged holes. The kit also includes installation tools, such as a thread tap and a nut driver, to facilitate a straightforward and efficient repair process.

The Helicoil 5549-16 Heli-Coil Master Thread Repair Kit 20 is suitable for a wide range of industrial, automotive, and mechanical applications, including engine blocks, transmission housings, and hydraulic cylinders. The repair process is relatively simple and quick, saving time and resources compared to thread replacement.

Additionally, this kit is known for its versatility, as it can be used to repair both aluminum and steel threads. The Helicoil inserts are designed to expand and lock in place when installed, providing a tight and secure thread repair that can withstand the rigors of heavy-duty use.

In summary, the Helicoil 5549-16 Heli-Coil Master Thread Repair Kit 20 is an essential tool for anyone dealing with damaged or worn-out threads in their machinery or vehicles. With its high-quality, durable Helicoil inserts, easy-to-use installation tools, and versatility, this kit offers a reliable and cost-effective solution for extending the life of your equipment.

Helicoil 5549-16 is a heli-coil master thread repair kit used for repairing stripped or damaged threads in various applications. Here are some pros and cons of using this product:

1. Easy to use: Helicoil 5549-16 is designed to be a simple and effective solution for repairing damaged threads. It comes with a drill bit, a tap, and the Helicoil inserts, making it a complete kit for the repair job.

2. Versatile: The Helicoil inserts in this kit are available in various sizes, allowing it to be used for repairing threads in different applications and sizes.

3. Quick repair: Helicoil 5549-16 allows for quick thread repairs, reducing downtime and saving time and money compared to replacing the entire part.

4. Cost-effective: Compared to the cost of replacing a damaged part, using a Helicoil repair kit is a more cost-effective solution.

1. Limited to specific thread sizes: The Helicoil inserts in this kit are available in specific sizes, so it may not be suitable for repairing threads that fall outside of those sizes.

2. Requires some skill: While the repair process is relatively simple, it does require some skill and precision to properly install the Helicoil inserts.

3. May not be suitable for high-stress applications: Helicoil repairs may not be suitable for high-stress applications, as the repaired threads may not be able to withstand the same level of force as original threads.

Helicoil 5549-16 is a useful and cost-effective solution for repairing damaged threads in various applications. Its ease of use, versatility, and quick repair capabilities make it a valuable addition to any toolbox. However, it does have some limitations, such as being limited to specific thread sizes and requiring some skill to install. Overall, it is a recommended product for those in need of a reliable thread repair solution.

Details:

specifications threadtoollot:

• brand: Helicoil
• mpn: 5549-16
• type: Heli-coil Insert
• system of measurement: Sae
• set or single item: Set
• country of origin: United States

shipping threadtoollot:

• service: economy
• class: economy
• type: fixed
• transit: 6-10 days

payments threadtoollot:

• wallet: apple-pay
• other
• credit card: discover

offer threadtoollot:

• prices: $23.99–$40.00
• item condition:
  • New
  • Used
• best offers: true
• in stock #: 5
• started: december 24, 2025
• options: ship-to-home
• sold #: 11
• availability: in stock

returns threadtoollot:

• time: 30 days
• policy: returns accepted
• paid by: buyer

seller threadtoollot:

• # reviews: 3190
• rating: 100.0%
• city: south gate, california

general threadtoollot:

• category: Auto Parts > Supplies > Hand > Threading Tools