A production assembly for controlling production from a well, the assembly including a wellhead that includes a body and a bore through the body. The bore does not include a hanger support shoulder but does include an engagement profile extending into the body. The assembly also includes a tubing hanger assembly installable in the wellhead. The assembly includes a load shoulder including a load segment expandable into supporting engagement with the bore engagement profile. The assembly also includes a tubing hanger and attached production tubing capable of being run in with the load shoulder and supportable on the load shoulder when the shoulder is engaged with the wellhead.