Tim
Metric threads are 60 degrees, the 55degree masters are Whitworth.
Michael
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On Thu, Mar 2, 2023 at 12:55 PM, OldToolmaker wrote:
Tim,
The Unimat thread masters I have had were not buttress thread form but ¡°V¡± form. I would assume the metric thread masters are 55 degree thread form but I am not sure and the US version is most likely UNF 60 degree (unified national fine).
Perhaps someone here on this group can clarify this
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