OM602.962 Valve Cover Gasket Job Parts

Hi all, about to do my valve cover gasket on my 91 300D Turbo. I have the gasket and am about to order the crankcase breather grommet and the gasket for the charge pipe/manifold. Can I reuse the bolts if the threads look good or do I have to get new washers at least? Thanks in advance. My delivery valve seals could probably be done along with injector return lines but I’m planning on selling the vehicle and don’t want to get too caught up in repairs when there isn’t anything detrimental.