nuts and bolts, the
The essential or basic aspects of something, as in They have lofty goals but don't specify the nuts and bolts of how to achieve them. This expression alludes to basic working components of machinery. [Mid-1900s]
Words nearby nuts and bolts, the
nutritive equilibrium,
nutriture,
nuts,
nuts about, be,
nuts and bolts,
nuts and bolts, the,
nutshell,
nutso,
nutsy,
nutter,
nutting