pls help to confirm some size.

JohK / nutsnbolts

A OpenSCAD library that allows for simple creation of nuts and bolts and respective nut catches and screw holes

GNU General Public License v3.0

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pls help to confirm some size. #6

Closed eexpress closed 4 years ago

eexpress commented 7 years ago

I want draw a M4 bolt. use this library is so easy, but the size is deferent with standard I am looking for. I am not skill at bolt standard. Data below is from webpage.

M4.0 / distance 0.70 / MaxD 3.98 / MiniD 3.83 / 3.40

but when I draw a M4, the diameter is only 3.81. <-------------------------

here is my screenshot https://www.pinterest.com/pin/276408495860470605/

JohK commented 7 years ago

Hi,

I'm not quite sure what your complaint is about. How are you measuring, sorry but I can't open the link? The thread is not exactly according to standard and for optical purposes only!

(btw; The standard gives d_s,min as 3.82 - so we're not that much off... :)