Emhart Heli-Coil® Tangless Inserts eliminate tang break-off and retrieval and are easily adjusted or removed after installation. The Bi-Directional Design installs quickly and easily from either end of the insert. HELI-COIL Tangless inserts have a bi-directional design allowing the insert to be installed from either end Tangless inserts are available as free running & screw locking Types, with all regular coatings.
Heli-Coil Tangless screw lock inserts provide a positive, self-locking torque and comply with both MIL-I-8846 /NASM8846 and NAS1130 requirements.
Typical Tangless NAS1130 Parts can be identified as in the product linecard available at this site.

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