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Helicoil Tangless Screwlocking Insert

Tangless threaded inserts provide permanent, wear-resistant screw threads that completely eliminate the need for tang break-off and retrieval. The “Screw-Locking” tangless®insert provides self-locking torque on the male member by a series of “chords” on one or more of the insert coils. With tangless inserts, no loose tangs are left behind, and they are the solution when foreign object debris (FOD) cannot be present in critical applications. They eliminate the need for tang break-off and tang retrieval and can be easily adjusted or removed after installation.
  • Require no staking, locking, swaging, keying, or interference fit.
  • Automatically adjusts to any expansion or contraction of the parent material.
  • Anchor permanently in place against the tapped hole.
  • Positively secures threaded members against vibration or shock loosening.
  • Positive self-locking torque, complying with NSAM8846.
  • Available in inch and metric series.
  • Successful applications in aviation, electronics, industrial, automotive, and military.
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