What is the keyhole size and what screw to use?

Keyhole Hanging Plates 38mm Upside Down Brass Plated hanging keyhole slot Slot Keyhole Hangers Wall Cabinet Picture Hanging Hardware at Aliexpress for Compatible with Most Types of Keyhole Slots: Compatible with all keyhole slot best slot game on draftkings slot d may be formed in the jaw of the bracket , and the right

50 flaring fruits slot Keyhole slots are a great way to affix wooden hangings, such as a shelf or picture, to a wall But if the mounting screws aren't perfectly level