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Countrsink lead-in for internal threads--is there a std?

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dtm247

dtm247

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thread404-137155

We typically use a 90° spot and edge break requirement noted on the print. For example, M10x1.5 has a max major of ~10.4 and if the edge break requirement is .1-.5mm, we will have a chamfer diameter of Ø10.5-Ø10.9mm to satisfy the requirement.
 
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You're answering a 16-year old thread where the original poster hasn't logged in since 2009?

Dan - Owner
Footwell%20Animation%20Tiny.gif
 
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