Inch Fine Thread Repair Kit - 1/4-28 x .375 - Heli Coil Products

This Heli-Coil 5528-4 Inch Fine Thread Repair Kit provides a robust solution for repairing damaged or stripped 1/4-28 fine threads in demanding automotive and industrial environments. This professional-grade 1/4-28 helicoil kit effectively restores compromised threads to their original size and strength, ensuring secure fastening and preventing costly component replacement. It is an indispensable tool for maintaining equipment integrity and extending component life.

Key Features

• Comprehensive Repair Solution: This kit includes all essential components for a complete thread repair, excluding only the drill bit. It comes with a specialized tap (Part No. 821-4) and an installation tool (Part No. 2299-4).
• Precision Thread Restoration: Engineered to restore 1/4-28 fine threads to OEM specifications, guaranteeing a strong and permanent repair.
• Enhanced Durability: Utilizes high-quality Heli-Coil inserts (Part No. R1191-4), which offer superior strength and corrosion resistance compared to the original threads, often resulting in threads stronger than new.
• Generous Insert Quantity: Each kit contains 12 inserts, providing ample supply for multiple repairs or future applications.

Applications

This Heli-Coil thread repair kit is engineered for professional technicians across various fields, including automotive, motorcycle, marine, and general industrial maintenance. It is commonly utilized for critical repairs such as stripped spark plug holes, engine component fastenings, and transmission cases where 1/4-28 fine threads are present. Its precision engineering ensures reliable thread repair in materials like aluminum, cast iron, and steel, making it suitable for a wide range of demanding applications.

Specifications

• Manufacturer: Heli Coil Products
• Model Number: 5528-4
• Thread Size: 1/4-28
• Insert Length: 0.375 inches
• Tap Part No.: 821-4
• Installation Tool Part No.: 2299-4
• Insert Package Part No.: R1191-4
• Drill Size (not included): 17/64"
• Inserts Per Kit: 12