Lug Nut Chrome 1/2x20 Flat close Quantity in Basket: None Code: LUG7 Price: $1.50 Quantity: Lug Nut CHR 1/2-20 Flat Base Acorn Style Capped Lug Chrome Finish. Used on the rear of Polaris models with 4/4 rear bolt pattern (most straight axle models) and also used on most golf carts with flat seat wheels.