The auto industry supply chain depends on parts and materials from around the globe – from relatively inexpensive nuts and bolts that are cheaper to buy from foreign producers, to expensive computer chips and other electronic components that aren’t made in sufficient quantities in US factories to meet demand. (CNN)
He's more concerned about the nuts and bolts of location work.
nut: tuerca || nuez
nuts and bolts: tuercas y tornillos.
nuts and bolts: If you talk about the nuts and bolts of a subject or an activity,te refieres a sus aspectos prácticos y específicos, más que a ideas abstractas. Los detalles esenciales o prácticos. Los aspectos básicos.
nuts (noun): (coloquial) huevos, pelotas, cojones
nuts (adj): loco, chiflado
Go nuts: volverse loco, emocionarse mucho.
Be nuts about: estar loco por algo/alguien.
Drive someone nuts: volver a alguien loco.