I have a wall mounted metal barbell holder that holds up to three barbells. The holder has pre-drilled holes 10 inches apart (two on each end). To mount this to a wall, I will have to attach a stringer that I can drive into the 16 inch studs between it, and then attach the metal holder to that stringer. I bought a 3/4" maple board to act as the stringer, and will attach it with lag screws into the studs.
My question is, what is the best way to attach the metal holder to the maple board?
I bought one inch lag screws, and I also bought nuts and bolts. However, I want it flush to the wall, and using nuts and bolts will necessitate drilling holes on the back of the board to recess the nuts. At that point, the .75" maple board will only be .5" thick where the bolts pass through.
Will the board support the metal holder and three barbells (20lbs + 45lbsx 3 =155 lbs)??
Whats the best way to do this?