the nuts and bolts
US /ðə nʌts ənd boʊlts/
UK /ðə nʌts ənd boʊlts/

1.
perkara-perkara asas, butiran penting, selok-belok
the basic practical details of a subject or activity
:
•
Let's get down to the nuts and bolts of the project.
Mari kita bincangkan perkara-perkara asas projek ini.
•
He understands the nuts and bolts of how a car works.
Dia memahami asas-asas bagaimana kereta berfungsi.