Suspension Fitting with Keyhole Slot For Use with Screw Hook

Keyhole Plate Exporters keyhole slot dimensions Rockler T-Slot Cutter Router Bit keyhole slot plug I looked at that one but originally missed the picture with the dimensions legend productswhiteside-3094-slot

keyhole slot I am building a hanging cabinet I am guessing here at the weight I think 30 to 40 pounds max I want to use 2 keyhole slots