"Boards should have at least 2 4-40 mounting holes in opposite corners (use the STAND-OFF part). The horizontal/vertical distance between them must be a multiple of 0.25 inches. It is preferred that the distance from the edge is also a multiple of 0.25 inches, but this is not required. If not physically possible, add an extra "wing" to the board for a tooling hole."
"Boards should have at least 2 4-40 mounting holes in opposite corners (use the STAND-OFF part). The horizontal/vertical distance between them must be a multiple of 0.25 inches. It is preferred that the distance from the edge is also a multiple of 0.25 inches, but this is not required. If not physically possible, add an extra "wing" to the board for a tooling hole."