1) Basic realities 2) Basic realties 3) BBC television documentary 4) Essential matters 5) Essentials 6) The basics 7) The essentials 8) The heart of the matter 9) The nitty-gritty 10) What to get down to Found on https://www.crosswordclues.com/clue/brass-tacks
Brass tacks are a type of pin or nail. In colloquial English, the phrase to come (or get) down to brass tacks is sometimes used idiomatically, meaning to consider the basic facts of a situation. Brass Tacks may also refer to: ... Found on http://en.wikipedia.org/wiki/Brass_Tacks