Fork fixing at the fork bridge

Moin Moin HD FLS Heritage Softail BJ 2006 Who can tell me how hard you have to attach the two screws to the upper fork bridge ( handlebars). After a ride over our roads in northern Germany I could turn these by hand. That gave me to think. Are these the upper spring legs screwing? Or is that just a cover, so it looks better. Didn’t want to take this off completely. Don’t know what comes up to me. How much Nm do these have to be tightened. MfG Ap atura