Every winding of the thread insert with precision formed, rhombic profile is free running. The result is an internal thread true to gauge that can be used on both sided.
Thanks to its green colour, the HELICOIL® plus free running is easier to identify after its installation.
It is conforming to DIN 8140-a.
HELICOIL® plus is trademark owned by Böllhoff and presented in Bulgaria by KEL Bulgaria.
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