which is the standard angle measure of a thread for bottle cap?

which is the standard angle measure of a thread for bottle cap?

I need the specification of the angle to 28mm bottle cap

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4 Answers

Hi,
I think there is no standard for the thread for bottle cap
I have seen the thread of a Coke bottle and I think the angle is 29 degrees (ACME theread), otherwise it is 30 degrees (Metric trapezoidal threads).

 
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that's not right, plastic bottles have two different pressure angles.

below is a maximum of 10 degrees and above is greater than 35 degrees.

I do not remember exactly what degree is, so look for a table of specifications for bottle threads.

 
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