Heli-Coil is the industry standard for wire thread inserts, offering a precision-engineered way to create high-strength threads in soft metals, plastics, and other low-strength materials. Known for their ability to repair damaged threads or provide durable new threads in original equipment, Heli-Coil inserts are lightweight, corrosion-resistant, and engineered to meet demanding aerospace, automotive, and industrial specifications.
Heli-Coil Wire Insert Systems
NAPPCO Advantage: Your Heli-Coil Source
As an authorized distributor, NAPPCO offers the complete range of Heli-Coil products along with application expertise to ensure proper sizing, installation, and performance. We also support customers with VMI programs, tooling supply, and installation training for both maintenance and production settings. Whether you need OEM-approved inserts for aerospace or quick-repair kits for field service, NAPPCO delivers the products and guidance you need.
Top Products
Heli-Coil’s lineup includes stainless steel and phosphor bronze inserts, easy-to-use thread repair kits, and specialized locking coil designs that prevent fastener loosening in high-vibration environments.
Tangless Screw Thread Inserts
Tangless threaded inserts provide permanent, wear-resistant screw threads that completely eliminate the need for tang break-off and retrieval.
Tanged Screw Thread Inserts
Screw-locking tanged screw thread inserts provide a resilient internal locking thread that grips the bolt and prevents it form loosening under vibration or impact.
Self-Tapping Screw Thread Inserts
Helically wound coil or carbon steel wire, precision-formed to a diamond-shaped cross section.
Metric & Inch Thread Repair Kits
Portable solutions for field and shop repair.
Installation Tools
Manual and power tools for fast, accurate insert placement.
Industries Served
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Aerospace
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Defense
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Automotive
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Electronics
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Marine
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Manufacturing
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Energy
Common Applications
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Thread repair in machinery
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Aerospace structures
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Engine components
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Electronics housings
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Marine Equipment
