Slotted 8/32 UNC Screws
Slotted Heads Screws
8/32 Slotted/Cross-Head Screws.
The slot screw drive has a single slot in the fastener head and is driven by a "common blade" or flat-bladed screwdriver. A cross or double-slot screw drive has two slots, oriented perpendicular to each other, in the fastener head; a slotted screwdriver is still used to drive just one of the slots.