Understanding Different Screw Head Types for Beginners

For example, a Phillips head screw would need a Phillips head screwdriver Slotted screw The slotted screw has been around the longest This is the traditional

A slotted screwdriver is still used to drive just one of the two perpendicular slots found in the fastener head of a cross or double-slot screw

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slot sultanking ISO 225:1983, Fasteners — Bolts, screws, studs and nuts – Symbols and designations of dimensions ISO 261:1973, S0 general purpose metric screw threads –