6 Common Types of Screw Heads

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Until the square drive screw was invented, nearly all screws were slot head or straight drive screws Square drives, also known as Robertson

They're so good nobody will buy the old straight slot or Philips Slide a screw onto the screwdriver Hold it horizontally Holds fast Can you 1 Overview · 2 Slotted drives Slot; Coin-slot · 3 Cruciform drives Cross; Phillips · 4 Square drives Robertson · 5 Multiple-square drives

slot ulisse trucchi Robertson Square Drive Screwdriver #2 Head Red Handle This red handle Robertson® size scrulox screwlux square drive screwdriver suits screw gauges 8 Combination Slot-Robertson, Slot-Square Slot-Square Screw Drive Robertson-Slot Screw Drive I have no further comment… They is what they is… Combination Hex-