Never heard of Eppy's either, used to work in the area. Avoid driving/cabbing until 9:30 am and not around 2:00- 3:30pm, as school buses, teachers and mommy drivers jam up the roads, especially in Brooklyn. Do you have Home Depots and Lowes over in UK ?, pretty good hardware and tool departments, very large stores. Do not bother looking for tools in Manhattan, all small stores and expensive. Manhattan is good for photo equipment.
"I'm from the UK, and I'll be there in November for 5 days."
Bummer, you miss the Halloween parade by a few days, definite bucket list must see, the best parade !!!!
Almost forgot, how about Harbor Freight, often referred to as horror freight. Please do not think our tool culture is bad if you visit one of the stores.