Simple design to mount a BLTouch to the existing Hemera nut mounts. Has a path for the BLTouch wires to run through and requires a couple of heat set inserts. 

2 x 18-8 Stainless Steel Low-Profile Socket Head Screws with Hex Drive, M3 x 0.5 mm Thread, 6 mm Long

2 x Brass Tapered Heat-Set Inserts for Plastic, M3 x 0.5 mm Thread Size, 3.8 mm Installed Length