Heli-Coil 5521-3 Thread Repair Kit, 10-24 UNC, 12 Inserts, Tap, Installation Tool

Heli-Coil 5521-3 Thread Repair Kit, 10-24 UNC, 12 Inserts, Tap, Installation Tool

• Heli-Coil 5521-3 is a thread repair kit for restoring damaged 10-24 UNC internal threads. The kit includes 12 stainless steel inserts plus the matching tap and installation tool to create a durable repaired thread. It requires a 13/64 Inch drill bit for hole preparation (drill bit not included).
• Features:
  • 10-24 UNC thread size helps restore stripped internal threads to the original fastener specification
  • 12 stainless steel inserts provide multiple repairs from one kit for maintenance efficiency
  • Included tap matches the insert thread system to help create the correct tapped hole for installation
  • Included installation tool supports controlled insert installation for consistent thread restoration
  • Requires a 13/64 Inch drill size (drill bit not included) to support proper hole preparation before tapping
• Includes:
  • Stainless Steel Thread Inserts, 10-24 UNC, 0.285 Inch Length (12)
  • Heli-Coil Tap, 10-24 UNC STI
  • Heli-Coil Installation Tool
  • Instructions
• Specifications:
  • Manufacturer: Heli-Coil
  • Part Number: 5521-3
  • MPN: HE5521-3
  • UPC: 025964110152
  • Alternate Part Numbers / Cross References: 55213
  • Category: Thread Repair
  • Subcategory: Thread Repair Kits
  • Product Type / Function: Thread Repair Kit
  • Thread Standard: UNC
  • Thread Size: 10-24
  • Insert Length: 0.285 Inch
  • Inserts Per Kit: 12
  • Drill Size Required: 13/64 Inch
  • Drill Bit Included: No
  • Replacement Insert Package: R1185-3
  • System Compatibility Or Application: Designed to repair damaged internal threads tapped to 10-24 UNC using Heli-Coil inserts
• The Thread Repair Kit can also be referred to as 10-24 thread repair kit, 10-24 UNC helicoil kit, stainless thread insert kit, thread insert repair kit, and coil thread insert kit.

Heli-Coil is a brand known for wire thread insert systems and related installation tooling used for thread restoration and strengthening in metal components. Its product range covers common Inch and metric thread standards for maintenance, repair, and manufacturing applications.

Q: What thread size does this kit repair?
A: It is designed to repair internal threads to 10-24 UNC.

Q: Does the kit include a drill bit?
A: No. The required drill size is 13/64 Inch, but the drill bit is not included.

Q: What components are included in the kit?
A: The kit includes 12 stainless steel inserts, the matching Heli-Coil tap, an installation tool, and instructions.

Q: What replacement inserts fit this kit?
A: The specified replacement insert package is R1185-3.