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Thread Turning Inserts Technical Section
Important Points about Carmex
Threading Inserts
1. In most thread forms
internal and external
threads have different 4. Profiles of Carmex
depth and radii, thus internal & external
tools are not threading inserts
interchangeable are precision ground
to ensure accurate
thread geometry
when used in their
corresponding
2. The Insert relief toolholders.
angle of a standard Using internal inserts
Carmex external with an external holder
toolholder is 10; for an will result in distortion of angle
internal toolholder it is 15. and insert geometry.
This 5 difference is
to provide additional
necessary radial clearance.
5. Insert and toolholder
3. Our built-in relief angles should always match.
ensure automatic insert An IN-RH insert must be
flank angle clearance. used with an IN-RH
toolholder.
No mismatch is allowed.
Flank Clearance Angle
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