US /ˌfaɪvˈfɪŋɡɚ ˈdɪskaʊnt/
UK /ˌfaɪvˈfɪŋɡə ˈdɪskaunt/
And lastly, and I'm not encouraging this, but you may hear this expression, the five-finger discount.
Five-finger discount means stealing something.