ASME B18.29.1 — Helical Coil Screw Thread Inserts — Free Running and Screw Locking

ASME B18.29.1 covers helical coil inserts (Heli-Coil style) — the coiled-wire thread repair and reinforcement inserts, in free-running and screw-locking forms.

What It Covers

• Insert sizes and materials
• Drill and tap sizes
• Installation tang removal
• Free-running vs locking coils

Related Fasteners

• Helical Insert
• Key-Locking Insert
• Self-Tapping Insert
• Machine Screw