Screw drive types
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Slotted
Slot drive Cross
Cruciform
Frearson French recess ISO 8764 JIS B 1012 Mortorq Phillips Pozidriv Supadriv Torq-set Phillips/Slotted
External polygon
Square Pentagon Hex 12-point
Internal polygon
Tri-angle Robertson (square) Hex socket (Allen) Security hex Double-square Triple-square 12-spline flange Double hex
Hexalobular
Torx Polydrive Torx ttap External Torx
Three-pointed
Tri-point Tri-groove Tri-wing
Special
One-way Spline socket Quadrex Pentalobe Spanner head Line Head
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