Found these on Amazon and they look similar to the OEM but are one piece.
This Listing Is For A Set Of 20 Chrome Premium Veritek Performance VPE-1215FFOECH Lug Nuts
For Use With Factory Ford Lincoln Passenger SUV Wheels
Heat Treated 10.9 Grade Steel Material / Chrome Finish
Hex: 3/4 19mm
Seat: Large Acorn
Overall Length: 1.25" 32mm
Through-Hardened For Maximum Durability and Tensile Strength.