From Standup Mathematician.

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OEIS sequence A010527 "Decimal expansion of sqrt(3)/2"
https://oeis.org/A010527

Do support the OEIS! https://oeisf.org/donate/

And here are a bunch of the digits:
0.8660254037844386467637231707529361834714026269051903140279034897

Wikipedia page on "ISO metric screw thread"
https://en.wikipedia.org/wiki/ISO_metric_screw_thread

Huge thanks to my Patreon supporters. They keep my triangle equlateral. https://www.patreon.com/standupmaths

CORRECTIONS
– None yet, let me know if you spot anything!

Filming and editing by Alex Genn-Bash
Written and performed by Matt Parker
Produced by Nicole Jacobus
Music by Howard Carter
Design by Simon Wright and Adam Robinson

MATT PARKER: Stand-up Mathematician
Website: http://standupmaths.com/
US book: https://www.penguinrandomhouse.com/books/610964/humble-pi-by-matt-parker/
UK book: https://mathsgear.co.uk/collections/books/products/humble-pi-signed-paperback

Oh look at this: https://forms.gle/hWes6BgPji3L8RfH6