Helicoil Thread Repair Kit, 10 – 24 NC (5521-3)
Helicoil 5521-3 Thread Repair Kit 10-24 NC restores damaged 10-24 NC threads quickly and effectively. This comprehensive kit includes everything needed to repair internal threads, ensuring secure, long-lasting results for a variety of automotive and mechanical applications. The Helicoil Thread Repair Kit 10-24 NC 5521-3 provides a fast and reliable solution for thread restoration, ideal for professionals and DIY enthusiasts alike.
Repairs 10-24 NC threads with ease
Includes 12 stainless steel inserts, tap, and installation tool
Compatible with a 13/64" drill bit (not included)
Replacement insert package number: R1185-3
Suitable for use in automotive, industrial, and mechanical applications
Restores damaged threads to original size and strength
Provides a permanent and durable repair solution
Reduces the need for part replacements, saving time and money
Ensures secure, long-lasting repairs in various materials such as aluminum and steel
Convenient, easy-to-use kit ideal for professionals and DIY users
Technical Specifications:
Thread Size: 10-24 NC
Drill Size: 13/64" (Drill bit not included)
Inserts Per Kit: 12
Replacement Insert Package: R1185-3
Product identification
- Brand: Helicoil
- Model / MPN: 5521-3




