I just got some new spring perches in the mail but they were missing the nut and bolt (hear that Frank?) I would prefer to install new mounting hardware rather than what is on there from 40 years ago. To complicate matters, I am in Euroland so everything here is metric so I need to order something stateside in advance of removing the old ones. What do I need to order? The perches are Opentracker's roller spring perches that I purchased second hand.

