Let's nail down the details.

Meaning

Suggesting a plan to finalize details.

Examples

• John: We've got the main points covered.
• Alice: Yes, but we still need to finalize some things. <b>Let's nail down the details</b>.
• John: Okay, what do we need to discuss?
• Alice: Exactly. <b>Let's nail down the details</b> of the budget and timeline.