Generic mount for 8mm screw head

Needed a simple mount to take a number of random things on the tool board. The keyhole mount is design for a panhead screw less then 8mm in diameter (margin +1) with a shaft of 4mm or less.
Use of the print is for the print to be mounted on the board with a screw in the device or vice versa. I had originally considered a ball socket style design but hard to beat the durability of a screw shaft